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S90-18A | Fundamental SOA Security

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S90-18A - Fundamental SOA Security - braindump

Vendor SOA
Exam Number S90-18A
Exam Name Fundamental SOA Security
Questions 98 Q & A
Recent Update February 14, 2019
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S90-18A exam Dumps Source : Fundamental SOA Security

Test Code : S90-18A
Test Name : Fundamental SOA Security
Vendor Name : SOA
Q&A : 98 Real Questions

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SOA Fundamental SOA Security

The basic alterations between microservices and SOA | killexams.com Real Questions and Pass4sure dumps

for a lot of architects and developers, carrier-oriented architecture is the software mannequin they're most experienced...

with. nonetheless it's feasible that administration will demand a shift to microservices. As such, SOA builders should still consider the transformations between microservices and SOA and how to make the transition from the monolith as smooth as possible.

Core concepts in microservices and SOA

There have at all times been two dimensions to the idea of SOA. on the conceptual level, SOA is a model for constructing applications by means of assembling add-ons that can be shared among purposes and hosted independently. on the implementation stage, SOA developed a collection of requirements to define application features and interfaces, broker entry and provide protection, together with elementary Object access Protocol and net services Description Language.

a lot of SOA's underlying ideas are additionally core ideas in microservices. youngsters, microservices apply these ideas through the lens of the web, the net and rest interfaces.

basically each development crew is generic with leisure and programming web-based applications, so that they already have the fundamental expertise to take care of microservices building. The focal point of implementation just should shift to the web, in an effort to involve adapting to a couple new procedures.

The term microservices can be a source of bewilderment for some former SOA builders. This time period can also conjure up the picture of lots of or heaps of features that consist of a pair traces of code that may also be known as upon as mandatory. this kind of microservices framework would virtually obviously generate enormous delays as a result of message transfer latency. Former SOA practitioners should keep in mind how SOA's componentization design concepts are equally effective for microservices.

where microservices and SOA differ

The difference between stateless and stateful conduct is likely to be probably the most confounding difficulty for SOA builders to hold close. One standard rule is that make sure to never store facts within a microservice. That follow would restrict the capacity to scale below load or replace a failed service. in case you should retain information or context across assorted situations in a microservices architecture, keep the statistics both with the calling software and send it to the microservice when it be referred to as, or get it from a returned-end database. Design microservices so that calling them with the equal input will always generate the equal output.

Microservices vs. monolithic architecture

there is also a primary change in how SOA services and microservices are used with the aid of an utility. SOA services normally appear as strategies or capabilities, meaning they're designed to emulate in the neighborhood written utility components. as an instance, when an SOA carrier is needed, you name it. by contrast, microservices don't seem to be referred to as however are a useful resource you draw from. When they're utilized in adventure processing, as an instance, they are triggered by using an adventure in preference to explicitly referred to as. at last, microservices are usually stateless, the place most SOA components are stateful.

Addressing security and governance issues is additionally greater nuanced in microservices. Many groups have developed standardized methods for safety, identity administration and governance around SOA. although, most businesses wouldn't have any standardized learn how to take care of protection and governance concerns in microservices. Architects moving to microservices should devise the best way to tackle these needs after which make certain they are standardized throughout the total IT ecosystem. if they are not, alterations in security and identification techniques will stall deployment. It additionally capability that, when opportunities for brand spanking new purposes are recognized, there is a possibility of hidden incompatibilities. fortunately, there are lots of proven token-primarily based techniques for id management and protection for microservices. Standardizing on one will maintain open microservices use with out compromising protection and governance.

If the cloud is the long run, then microservices are too.

yet another enviornment where microservices and SOA vary is in organizing workflow. SOA purposes are sometimes linked with an enterprise provider bus (ESB), the place execution is guided by way of enterprise process management (BPM) language. Microservices are referred to as explicitly from applications, so the sequencing of method steps is achieved at the application stage. additionally, be aware that microservices are reusable components. They are not huge chunks of purposes, which is what ESB and BPM languages assist. although, there are programming design patterns that give an identical technique orchestration the usage of microservices.

Interfaces of any variety require some type of information change mechanism. With SOA, the ordinary mechanism is XML, which can be bendy. although, some developers find XML verbose and sophisticated. With microservices, you could still use XML, however many builders gravitate toward JSON as a result of they discover it less complicated to work with. in case your team is very normal with XML and not Java, that you may use XML. but JSON is ideal in most situations, and the transition may still now not be complex for many SOA programmers.

Are microservices price it?

The most effective question that continues to be is whether or not SOA developers actually need to undertake microservices suggestions at all. There continues to be numerous SOA building going on, and many gigantic and admired functions are nonetheless according to SOA from both a conceptual and implementation standpoint. however the cloud encourages a dynamic and elastic imaginative and prescient of software components, where scalability and resiliency are more useful than composability on my own. Cloud models are more suitable suited for element interfaces that are light-weight and capable of being formed dynamically at runtime, which is the best use for a relaxation-based mostly microservices architecture.

If the cloud is the future, then microservices are too. SOA is rarely going to vanish, but it's additionally not going to be adapted to these new necessities. utility practices are moving to microservices, so SOA practitioners should still be organized to go there as smartly.


SOA fundamentals | killexams.com Real Questions and Pass4sure dumps

This chapter from one hundred SOA Questions answers the questions, what's SOA, is SOA an architectural vogue, what are basic constructs (the DNA) of SOA, what is the difference between a web provider and an SOA carrier and what makes a task an SOA implementation?

This chapter is from the book 
  • Delusions, error, and lies are like huge, gaudy vessels, the rafters of that are rotten and worm-eaten, and people who embark in them are fated to be shipwrecked.
  • —Buddha
  • provider-oriented structure (SOA) is described in a number of techniques, but now not all definitions are equal, and not all definitions are finished. in its place of just featuring one more definition of SOA, this chapter describes the basic building blocks of SOA and looks at the value proposition of SOA from key stakeholder perspectives. besides protecting the simple building blocks of SOA, its DNA, and the cost propositions of adopting SOA and its optimal utility, this chapter describes what makes an implementation an SOA deployment. specifically, this chapter addresses right here questions:

  • what's SOA?
  • Is SOA an architectural style?
  • What are primary constructs (the DNA) of SOA?
  • what is the change between a web provider and an SOA service?
  • What makes a venture an SOA implementation?
  • 1. what's SOA?

    numerous carriers, software providers, system integrators, architects, authors, analysts corporations, and specifications our bodies deliver definitions of SOA. The definitions of SOA are different. Most are complementary and do not conflict with every other. SOA has a lot of definitions because the definition is frequently tuned to a specific audience, as explaining SOA to a CEO is different from explaining SOA to a programmer. The time period service orientation is commonly used synonymously with SOA, but identical to SOA it has a wide range of interpretations. service orientation is broader and represents a means of thinking about features within the context of enterprise and IT. This book makes no difference between SOA and repair orientation and in some instances may additionally use both phrases synonymously.

    An agreed-upon definition for SOA eludes the business. any one studying Wikipedia's definition web page for SOA will see the challenges of attempting to benefit consensus on an SOA definition. specifications bodies, the OASIS group, and the Open neighborhood have supplied complementary but distinctive SOA definitions. introduced with a clean sheet of paper, an artist sees a canvas. A poet might fill it with verse. An engineer seizes the probability to make a paper aircraft. youngsters may also see it as a future pile of spit wads. SOA is that blank sheet of paper.

    To the executive tips officer (CIO), SOA is a adventure that guarantees to in the reduction of the lifetime can charge of the application portfolio, maximize return on funding (ROI) in each utility and expertise supplies, and cut back lead times in supplying options to the enterprise.

    To the business govt, SOA is a set of features that may also be uncovered to their shoppers, partners, and different parts of the organization. company capabilities, characteristic, and business good judgment can also be combined and recombined to serve the wants of the company now and day after today. functions serve the business because they're composed of capabilities that can be instantly modified or redeployed in new company contexts, allowing the business to instantly respond to changing client needs, enterprise alternatives, and market circumstances.

    To the enterprise analyst, SOA is a means of unlocking value, as a result of business tactics aren't any longer locked in utility silos. purposes now not function as inhibitors to changing business needs.

    To the chief architect or enterprise architect, SOA is a means to create dynamic, highly configurable and collaborative functions developed for trade. SOA reduces IT complexity and tension. SOA becomes the answer to stop the gradual entropy that makes purposes brittle and intricate to change. SOA reduces lead instances and costs as a result of reduced complexity makes modifying and testing purposes less demanding when they are structured the usage of capabilities.

    To the IT architect, SOA is the architectural solution for integrating distinct methods by using featuring an architectural fashion that promotes loose coupling and reuse. Many IT architects think they have viewed this fashion before with earlier architectural initiatives such as DCE, the disbursed Computing ambiance, and CORBA, the typical Object Request broker structure.

    To the developer, SOA is a programming mannequin or paradigm the place web services and contracts becomes a dominant design for interoperability. it's an internet provider when it uses a web provider Description Language (WSDL) or equivalent specification for describing the service. web features enable companies to talk suggestions, the usage of messages, with out intimate talents of each different's IT methods.

    supplying on the promises of SOA (more suitable company agility, maximized ROI, reduced IT complexity and stress, decreased expenses, decreased lead instances, reduced possibility, new opportunities to deliver cost, accelerated participation in price networks, and incremental implementation) requires you're taking a holistic view of SOA. If we limit the view of SOA to a single stakeholder (e.g., IT architect, developer, or company analyst) the merits will no longer accrue because SOA then just becomes one in a protracted list of overhyped technologies as opposed to a novel method to building flexible enterprise solutions.

    2. Is SOA an Architectural fashion?

    SOA is frequently considered as an architectural fashion that has been round for years. determine 1.1 suggests the architectural style of SOA. in this situation, a service buyer invokes or uses a carrier. The service buyer makes use of the provider description to gain necessary suggestions about the issuer service (e.g., account provider) to be consumed. The service description offers the binding tips so the buyer can connect to the carrier, and the outline identifies the a lot of operations (e.g., open or shut account) available from the company provider. A broker can be used to find the service using a registry that houses guidance concerning the service and its location.

    In figure 1.1, it's complicated to determine how the structure style of SOA permits the strategic advantages of SOA, corresponding to decreasing the lifetime charge of an application or bringing faster time to market or making applications resilient to alternate. SOA as an architectural trend regularly makes an SOA undertaking totally an IT undertaking the place the strategic company merits of SOA now not become the focus or measured outcomes. advantages of process flexibility, time-to-market mark downs, reduce charges, and others can be achieved with SOA, but best if we holistically undertake all stakeholder views of SOA and its utility and pursue SOA adoption as a consequence. When pundits, architects, consultants, or executives outline SOA as a pure technology play or as entirely an architectural fashion, they relegate it to the realm of IT science projects, overhyped technologies, and a marketing strategy instead of a novel method to building bendy enterprise options.

    An understanding of SOA is improved with the next question and reply. by means of looking on the SOA building blocks of SOA, that you can gain a fuller understanding of what SOA is and how to realize its promised advantages.

    3. What Are the basic Constructs (the DNA) of SOA?

    essentially the most simple construct or constructing block of SOA is a provider. utility engineering over the years has evolved from procedural to structured programming to object-oriented programming to part-based mostly development and now to provider oriented. figure 1.2 illustrates the distinct stages of abstraction from objects to capabilities. each evolution of abstraction builds on the previous, and SOA embraces the gold standard practices of object and component development.

    to look architectural vogue of SOA, confer with determine 1.1. That illustration indicates the fundamental constructs of SOA, such because the carrier client and the service company and their relationship. The customer invokes a provider, the business performance, by using contract. The company of the carrier defines the contract as a service description. An intermediary, comparable to a broking service, makes use of a registry to find or search for posted functions. provider consumer, carrier issuer, carrier description, provider broking service, and a registry are all part of the DNA of SOA.

    A provider in SOA is the logical, self-contained enterprise characteristic. capabilities in SOA have right here attributes:

  • Stateless: SOA functions neither remember the closing issue they have been asked to do nor do they care what the next is. features don't seem to be dependent on the context or state of other functions, most effective on their performance. speaking on the telephone is stateful, whereas posting a letter is stateless. The all over net gives a superb illustration, the place each and every request from a user for a web web page or URL results within the requested pages being served, but with out the internet server remembering the request later. every request or verbal exchange is discrete and unrelated to requests that precede or follow it.
  • Discoverable: A provider have to be discoverable through capabilities consumers of the service. in any case, if a carrier isn't commonly used to exist, it is not likely ever to be used. capabilities are posted or exposed via carrier providers within the SOA provider listing, from which they are discovered and invoked with the aid of service buyers.
  • Self-describing: The SOA carrier interface describes, exposes, and provides an entry factor to the carrier. The interface contains all the information a provider purchaser must find and fix to the service, devoid of ever requiring the purchaser to take into account (and even see) the technical implementation particulars.
  • Composable: SOA capabilities are, through nature, composite. They may also be composed from other capabilities and, in turn, will also be combined with other capabilities to compose new enterprise options.
  • loose coupling: free coupling allows the considerations of application facets to be separated into independent items. This separation of situation provides a mechanism for one provider to call one other with out being tightly sure to it. Separation of issues is executed with the aid of setting up boundaries, the place a boundary is any logical or physical separation that delineates a given set of tasks. for instance, an account provider has open account, authorization, and audit facets representing delineations of tasks and three separations of issues.
  • ruled by using coverage: capabilities are constructed by means of contract. Relationships between services (and between features and service domains) are ruled via policies and repair-stage agreements (SLAs), promoting system consistency and cutting back complexity.
  • independent place, language, and protocol: services are designed to be vicinity transparent and protocol/platform impartial (often talking, purchasable by any approved person, on any platform, from any region).
  • additionally, functions in a carrier-oriented structure typically have the following qualities:

  • Coarse-grained: capabilities are usually coarse-grained business features. Granularity is a press release of practical richness for a provider—the greater coarse-grained a provider is, the richer the function offered with the aid of the carrier. Coarse-grained capabilities cut back complexity for equipment developers via limiting the steps vital to meet a given business function, and that they cut back pressure on gadget resources with the aid of limiting the "chattiness" of the electronic dialog. functions by using nature are coarse-grained as a result of they encompass a large set of performance; the components that comprise purposes can be first-rate-grained. in a similar fashion, within an utility, a provider such as "get account suggestions" (which returns name, account quantity, and handle) may be described as coarse-grained, whereas a provider to "get account number" can be described as nice-grained.
  • Asynchronous: Asynchronous communique isn't required of an SOA carrier, nevertheless it does raise system scalability through asynchronous behavior and messaging recommendations. Unpredictable community latency and excessive communications prices can sluggish response instances in an SOA ambiance, because of the allotted nature of services. Asynchronous habits and messaging permit a carrier to challenge a service request after which proceed processing except the carrier issuer returns a response.
  • viewed from the correct down, SOA comprises right here constructs, as illustrated in figure 1.three: customer, enterprise approaches, features, components, information, suggestions, and guidelines. buyers permit invocation or composition of features at the customer layer via social software, mashups, enterprise processes, or other techniques. company approaches characterize the flows of actions required to complete a business method; they're compositions of services targeted to obtain enterprise desires. capabilities are the leading structuring factor required by way of a provider customer and are offered by the provider company. capabilities offer functionality and exceptional of provider, each of which might be externalized within carrier descriptions and policies. features can be composed of different services, as a consequence making them composite services. accessories recognise not handiest the functionality of the capabilities they expose but also be sure their satisfactory of carrier. counsel flows between the layers (as an instance, client, system, and repair) and inside a layer. ultimately, suggestions and guidelines exist for capabilities, components, and flows.

    besides the fact that children objects are illustrated in determine 1.3, the note object doesn't imply an implementation of object orientation, since the object can without difficulty be a procedural subroutine carried out in a large number of languages as conveniently as it will also be applied in a object-oriented programming language. SOA need to have capabilities and accessories that realize the functions. processes or flows may also string features collectively to meet a step or activity of a company system. as an example a switch of funds provider may additionally string together both a debit and credit account service.

    there is also a technology view of SOA. know-how makes it possible for SOA, makes it efficient, and optimizes the implementation, however SOA is not described through the technologies chosen for implementation. as an alternative, SOA is defined by means of offering a uniform potential to offer, find, have interaction with, and use capabilities (capabilities) to provide favored effects in keeping with measurable expectations.

    The major technologies linked to SOA consist of company-concentrated tools, software construction tools, and middleware technologies. determine 1.4 illustrates the fundamental know-how building blocks for SOA. equipment are required for SOA addressing design-time and runtime eventualities. company stakeholders use enterprise-focused tools for modeling and evaluation of business procedures and flows, and they'll additionally use enterprise pastime monitoring know-how to gain insights into business efficiency of tactics and workflow. IT practitioners use a group of equipment for building of business purposes and for managing the working atmosphere addressing integration, monitoring, and protection.

    The DNA of SOA will most likely be further investigated and described by way of standards businesses actively involved in defining an SOA ontology. as an example, see www.opengroup.org/projects/soa-ontology/. Such an ontology will tackle SOA key ideas, including services, provider contracts, carrier interfaces, composition (orchestration, choreography, and collaboration), methods, provider compositions, policies, and movements. every of those makes up the DNA of SOA.

    four. what's the difference Between an internet provider and an SOA service?

    The big difference between enterprise capabilities or SOA services versus an internet provider isn't regularly articulated, and a lot of equate the two as being the equal. SOA functions can also be realized as net capabilities, however no longer all internet features are equal to SOA services. net services characterize the use of both a published commonplace and a set of applied sciences for invocation and interoperability. SOA capabilities are functions that fulfill a key step or pastime of a company procedure and may be described as business features and are often uncovered as net functions.

    determine 1.3 illustrates each an SOA service and an internet carrier. The picture suggests the change between SOA and web services at runtime (i.e., implementation degree) and at design time. The internet provider is illustrated on the appropriate aspect of determine 1.5, notably the web services Description Language (WSDL) and its attributes similar to port varieties and operations. The attribute that makes it a web provider is using WSDL or equivalent.

    In design, we establish and specify a carrier that offers the design, or we identify and specify interfaces that encompass components specifications. The aggregate of the definition of the method and the interface at design time is what we consult with as a provider from an SOA standpoint. Use circumstances will also be used to capture the purposeful requirements for a provider. figure 1.5 contrasts the adjustments between a service in SOA and a web provider. both SOA functions and internet functions are a part of the DNA of SOA.

    In an SOA, business strategies, activities, and workflow are broken down into constituent purposeful elements called functions. They can be accessed and used without delay via functions, or they may also be mixed and matched with different features to create new enterprise capabilities. business capabilities or SOA features are reusable enterprise capabilities. Examples in banking consist of open account or exchange handle. For transportation, it could be get reservation or hang reservation, and with loan processing, get personal loan, practice for loan, and update handle are examples of company services. business tactics are also key constructs of SOA, a part of its DNA.

    5. What Makes a mission an SOA Implementation?

    The deployment of features makes a mission an SOA implementation, the place a provider is described within the preceding answer as an internet service or an SOA carrier. the use of the web service Description Language (WSDL) or equivalent makes a service an internet service. An SOA provider must fulfill the criteria described in the reply 2; particularly, an SOA carrier should be stateless; discoverable; self-describing; composable; loosely coupled; ruled; and independent of area, language, or protocol. it is, using features alone makes the assignment or implementation an SOA implementation. although, an SOA implementation can also not accrue the desired advantages of SOA round cost discount rates, reuse, time to market, or flexibility.

    functions can have distinct levels of maturity. for example, functions may also be advert hoc of their design and implementation where a WSDL façade is applied to make feature obtainable to other methods or applications. features can even be architected where carrier modeling and governance are used to maximize service reuse.

    The implementation of SOA applied sciences and not using a deployment of 1 or greater functions could also be defined as an SOA implementation. this would be strange because middleware and infrastructure implementations (e.g., a registry or commercial enterprise provider bus) would be applied along side the deployment of services.

    just as features have different tiers of maturity, so do SOA adoptions within a company. Some SOA adoptions require a software of tasks to address a experience of increasing maturity to achieve strategic SOA desires of building techniques for trade, infusing flexibility as an attribute of programs, or cutting back the lifetime expenses of applications and infrastructure. in this case, the software includes a series of SOA initiatives that incrementally elevate the maturity of SOA in an organization and along the manner permit the cognizance of the strategic SOA merits.

    regularly, as a result of overselling of SOA, company leaders, managers, and executives wrongly consider that the benefits of SOA instantly accrue when an SOA implementation occurs. SOA has dissimilar and diverse definitions, and hence its implementations are equally numerous. So, organizations in search of to accrue any of the promised benefits of SOA need to do greater than center of attention on SOA implementations. this is, each and every expected advantage of SOA requires a distinct stage of SOA maturity. for example, if the intention is barely to reduce the cycle time of a enterprise manner that deals with exterior companions, exposing net functions can be the only indispensable SOA adoption. although, if the business aim is to in the reduction of time to market for new products, this requires a broader adoption of SOA that addresses reusable capabilities, structuring of purposes the usage of capabilities, enhancing integration the use of services, and facets of SOA governance to handle provider sharing, funding, and possession.


    SOA utility is first with registry unbiased SOA suite | killexams.com Real Questions and Pass4sure dumps

    news

    SOA utility is first with registry independent SOA suite

    SOA application is launching what it claims is the first registry-impartial SOA platform. The product suite is compatible with UDDIv3-based mostly registries from different vendors, corresponding to Flashline, Infravio, LogicLibrary and Systinet.

    This launch is indicative of the fast maturing of the business SOA market and in certain the adoption of UDDI-primarily based registries as a simple constructing block, based on the business. As huge companies extend their SOA, UDDI registries are becoming part of SOA governance options.

    "SOA administration solutions deliver a basic basis for run-time governance of business SOA, and when integrated with registries, the complete is in reality more desirable than the sum of the elements," says Anne Thomas Manes, an analyst at Burton neighborhood. "Registries can use SOA management options to aid control the carrier provisioning manner, and SOA management solutions can use registries to preserve tips about managed capabilities and to find out about new capabilities that need to be provisioned and managed."

    SOA application offers SOA administration, mainframe web services and B2B net capabilities protection products. service supervisor, SOLA and XML VPN all offer integration with UDDIv3 registry products. they all connect directly to the registry as a provider repository devoid of requiring their personal proprietary carrier database. This direct connection avoids inefficient, non-scalable synchronization to be sure a really business-classification solution, based on the enterprise. For extra suggestions, visit SOA.


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    The fundamental differences between microservices and SOA | killexams.com real questions and Pass4sure dumps

    For many architects and developers, service-oriented architecture is the software model they are most experienced...

    with. But it's possible that management will demand a shift to microservices. As such, SOA developers should understand the differences between microservices and SOA and how to make the transition from the monolith as smooth as possible.

    Core concepts in microservices and SOA

    There have always been two dimensions to the notion of SOA. At the conceptual level, SOA is a model for building applications by assembling components that can be shared among applications and hosted independently. At the implementation level, SOA developed a series of standards to define application characteristics and interfaces, broker access and provide security, including Simple Object Access Protocol and Web Services Description Language.

    Many of SOA's underlying concepts are also core concepts in microservices. However, microservices apply these concepts through the lens of the internet, the web and REST interfaces.

    Nearly every development team is familiar with REST and programming web-based applications, so they already have the basic knowledge to cope with microservices development. The focus of implementation just needs to shift to the web, which will involve adapting to some new procedures.

    The term microservices can be a source of confusion for some former SOA developers. This term may conjure up the image of hundreds or thousands of services that consist of a couple lines of code that can be called upon as needed. Such a microservices framework would almost surely generate enormous delays because of message transfer latency. Former SOA practitioners should keep in mind how SOA's componentization design principles are equally effective for microservices.

    Where microservices and SOA differ

    The difference between stateless and stateful behavior is likely to be the most confounding issue for SOA developers to grasp. One simple rule is that you should never store data within a microservice. That practice would limit the ability to scale under load or replace a failed service. If you need to maintain data or context across multiple instances in a microservices architecture, store the data either with the calling software and send it to the microservice when it's called, or get it from a back-end database. Design microservices so that calling them with the same input will always generate the same output.

    Microservices vs. monolithic architecture

    There is also a fundamental difference in how SOA services and microservices are used by an application. SOA services normally appear as procedures or functions, meaning they are designed to emulate locally written software components. For example, when an SOA service is needed, you call it. By contrast, microservices are not called but are a resource you draw from. When they are used in event processing, for example, they are triggered by an event rather than explicitly called. Finally, microservices are typically stateless, where most SOA components are stateful.

    Addressing security and governance issues is also more nuanced in microservices. Many organizations have developed standardized methods for security, identity management and governance around SOA. However, most companies do not have any standardized methods to deal with security and governance issues in microservices. Architects moving to microservices must devise methods to address these needs and then ensure they are standardized across the entire IT ecosystem. If they are not, differences in security and identity procedures will stall deployment. It also means that, when opportunities for new applications are identified, there's a risk of hidden incompatibilities. Thankfully, there are many proven token-based systems for identity management and security for microservices. Standardizing on one will preserve open microservices use without compromising security and governance.

    If the cloud is the future, then microservices are too.

    Another area where microservices and SOA differ is in organizing workflow. SOA applications are often linked with an enterprise service bus (ESB), where execution is guided by business process management (BPM) language. Microservices are called explicitly from applications, so the sequencing of process steps is done at the application level. Also, remember that microservices are reusable components. They are not big chunks of applications, which is what ESB and BPM languages support. However, there are programming design patterns that provide similar process orchestration using microservices.

    Interfaces of any sort require some sort of data exchange mechanism. With SOA, the traditional mechanism is XML, which can be flexible. However, some developers find XML verbose and complicated. With microservices, you can still use XML, but many developers gravitate toward JSON because they find it easier to work with. If your team is very familiar with XML and not Java, you can use XML. But JSON is best in most cases, and the transition should not be difficult for most SOA programmers.

    Are microservices worth it?

    The only question that remains is whether SOA developers really need to adopt microservices techniques at all. There is still plenty of SOA development going on, and many large and prominent applications are still based on SOA from both a conceptual and implementation perspective. But the cloud encourages a dynamic and elastic vision of application components, where scalability and resiliency are more valuable than composability alone. Cloud models are better suited for component interfaces that are lightweight and capable of being shaped dynamically at runtime, which is the perfect use for a REST-based microservices architecture.

    If the cloud is the future, then microservices are too. SOA isn't going to disappear, but it's also unlikely to be adapted to these new requirements. Software practices are moving to microservices, so SOA practitioners should be prepared to go there as well.


    SOA Basics | killexams.com real questions and Pass4sure dumps

    This chapter from 100 SOA Questions answers the questions, what is SOA, is SOA an architectural style, what are fundamental constructs (the DNA) of SOA, what is the difference between a Web Service and an SOA service and what makes a project an SOA implementation?

    This chapter is from the book 
  • Delusions, errors, and lies are like huge, gaudy vessels, the rafters of which are rotten and worm-eaten, and those who embark in them are fated to be shipwrecked.
  • —Buddha
  • Service-oriented architecture (SOA) is defined in a number of ways, but not all definitions are equal, and not all definitions are complete. Instead of just providing another definition of SOA, this chapter describes the basic building blocks of SOA and looks at the value proposition of SOA from key stakeholder perspectives. Besides covering the basic building blocks of SOA, its DNA, and the value propositions of adopting SOA and its ultimate utility, this chapter describes what makes an implementation an SOA deployment. Specifically, this chapter addresses the following questions:

  • What is SOA?
  • Is SOA an architectural style?
  • What are fundamental constructs (the DNA) of SOA?
  • What is the difference between a Web Service and an SOA service?
  • What makes a project an SOA implementation?
  • 1. What Is SOA?

    Numerous vendors, application providers, system integrators, architects, authors, analysts firms, and standards bodies provide definitions of SOA. The definitions of SOA are diverse. Most are complementary and do not conflict with each other. SOA has a variety of definitions because the definition is often tuned to a specific audience, as explaining SOA to a CEO is different from explaining SOA to a programmer. The term service orientation is often used synonymously with SOA, but just like SOA it has a wide range of interpretations. Service orientation is broader and represents a way of thinking about services in the context of business and IT. This book makes no distinction between SOA and service orientation and in some cases may use the two terms synonymously.

    An agreed-upon definition for SOA eludes the industry. Anyone reading Wikipedia's definition page for SOA will see the challenges of trying to gain consensus on an SOA definition. Standards bodies, the OASIS group, and the Open Group have provided complementary but different SOA definitions. Presented with a blank sheet of paper, an artist sees a canvas. A poet might fill it with verse. An engineer seizes the opportunity to make a paper plane. Kids may see it as a future pile of spit wads. SOA is that blank sheet of paper.

    To the chief information officer (CIO), SOA is a journey that promises to reduce the lifetime cost of the application portfolio, maximize return on investment (ROI) in both application and technology resources, and reduce lead times in delivering solutions to the business.

    To the business executive, SOA is a set of services that can be exposed to their customers, partners, and other parts of the organization. Business capabilities, function, and business logic can be combined and recombined to serve the needs of the business now and tomorrow. Applications serve the business because they are composed of services that can be quickly modified or redeployed in new business contexts, allowing the business to quickly respond to changing customer needs, business opportunities, and market conditions.

    To the business analyst, SOA is a way of unlocking value, because business processes are no longer locked in application silos. Applications no longer operate as inhibitors to changing business needs.

    To the chief architect or enterprise architect, SOA is a means to create dynamic, highly configurable and collaborative applications built for change. SOA reduces IT complexity and rigidity. SOA becomes the solution to stop the gradual entropy that makes applications brittle and difficult to change. SOA reduces lead times and costs because reduced complexity makes modifying and testing applications easier when they are structured using services.

    To the IT architect, SOA is the architectural solution for integrating diverse systems by providing an architectural style that promotes loose coupling and reuse. Many IT architects think they have seen this style before with earlier architectural initiatives such as DCE, the Distributed Computing Environment, and CORBA, the Common Object Request Broker Architecture.

    To the developer, SOA is a programming model or paradigm where web services and contracts becomes a dominant design for interoperability. It is a web service when it uses a Web Service Description Language (WSDL) or equivalent specification for describing the service. Web services enable organizations to communicate information, using messages, without intimate knowledge of each other's IT systems.

    Delivering on the promises of SOA (improved business agility, maximized ROI, reduced IT complexity and rigidity, reduced costs, reduced lead times, reduced risk, new opportunities to deliver value, increased participation in value networks, and incremental implementation) requires you take a holistic view of SOA. If we limit the view of SOA to a single stakeholder (e.g., IT architect, developer, or business analyst) the benefits will not accrue because SOA then just becomes one in a long list of overhyped technologies rather than a novel approach to building flexible business solutions.

    2. Is SOA an Architectural Style?

    SOA is often seen as an architectural style that has been around for years. Figure 1.1 shows the architectural style of SOA. In this scenario, a service consumer invokes or uses a service. The service consumer uses the service description to obtain necessary information about the provider service (e.g., account service) to be consumed. The service description provides the binding information so the consumer can connect to the service, and the description identifies the various operations (e.g., open or close account) available from the provider service. A broker can be used to find the service using a registry that houses information about the service and its location.

    In Figure 1.1, it is difficult to determine how the architecture style of SOA enables the strategic benefits of SOA, such as lowering the lifetime cost of an application or bringing faster time to market or making applications resilient to change. SOA as an architectural style often makes an SOA project solely an IT endeavor where the strategic business benefits of SOA no longer become the focus or measured outcomes. Benefits of process flexibility, time-to-market savings, lower costs, and others can be achieved with SOA, but only if we holistically adopt all stakeholder views of SOA and its application and pursue SOA adoption accordingly. When pundits, architects, consultants, or executives define SOA as a pure technology play or as solely an architectural style, they relegate it to the realm of IT science projects, overhyped technologies, and a marketing strategy rather than a novel approach to building flexible business solutions.

    An understanding of SOA is enhanced with the next question and answer. By looking at the SOA building blocks of SOA, you can gain a fuller understanding of what SOA is and how to realize its promised benefits.

    3. What Are the Fundamental Constructs (the DNA) of SOA?

    The most basic construct or building block of SOA is a service. Software engineering over the years has evolved from procedural to structured programming to object-oriented programming to component-based development and now to service oriented. Figure 1.2 illustrates the different levels of abstraction from objects to services. Each evolution of abstraction builds on the previous, and SOA embraces the best practices of object and component development.

    To see architectural style of SOA, refer to Figure 1.1. That illustration shows the fundamental constructs of SOA, such as the service consumer and the service provider and their relationship. The consumer invokes a service, the business functionality, by contract. The provider of the service defines the contract as a service description. An intermediary, such as a broker, uses a registry to find or search for published services. Service consumer, service provider, service description, service broker, and a registry are all part of the DNA of SOA.

    A service in SOA is the logical, self-contained business function. Services in SOA have the following attributes:

  • Stateless: SOA services neither remember the last thing they were asked to do nor do they care what the next is. Services are not dependent on the context or state of other services, only on their functionality. Talking on the telephone is stateful, whereas posting a letter is stateless. The World Wide Web provides an excellent example, where each request from a user for a web page or URL results in the requested pages being served, but without the web server remembering the request later. Each request or communication is discrete and unrelated to requests that precede or follow it.
  • Discoverable: A service must be discoverable by potential consumers of the service. After all, if a service is not known to exist, it is unlikely ever to be used. Services are published or exposed by service providers in the SOA service directory, from which they are discovered and invoked by service consumers.
  • Self-describing: The SOA service interface describes, exposes, and provides an entry point to the service. The interface contains all the information a service consumer needs to discover and connect to the service, without ever requiring the consumer to understand (or even see) the technical implementation details.
  • Composable: SOA services are, by nature, composite. They can be composed from other services and, in turn, can be combined with other services to compose new business solutions.
  • Loose coupling: Loose coupling allows the concerns of application features to be separated into independent pieces. This separation of concern provides a mechanism for one service to call another without being tightly bound to it. Separation of concerns is achieved by establishing boundaries, where a boundary is any logical or physical separation that delineates a given set of responsibilities. For example, an account service has open account, authorization, and audit features representing delineations of responsibilities and three separations of concerns.
  • Governed by policy: Services are built by contract. Relationships between services (and between services and service domains) are governed by policies and service-level agreements (SLAs), promoting process consistency and reducing complexity.
  • Independent location, language, and protocol: Services are designed to be location transparent and protocol/platform independent (generally speaking, accessible by any authorized user, on any platform, from any location).
  • In addition, services in a service-oriented architecture typically have the following characteristics:

  • Coarse-grained: Services are typically coarse-grained business functions. Granularity is a statement of functional richness for a service—the more coarse-grained a service is, the richer the function offered by the service. Coarse-grained services reduce complexity for system developers by limiting the steps necessary to fulfill a given business function, and they reduce strain on system resources by limiting the "chattiness" of the electronic conversation. Applications by nature are coarse-grained because they encompass a large set of functionality; the components that comprise applications would be fine-grained. Similarly, within an application, a service such as "get account information" (which returns name, account number, and address) could be described as coarse-grained, whereas a service to "get account number" could be described as fine-grained.
  • Asynchronous: Asynchronous communication is not required of an SOA service, but it does increase system scalability through asynchronous behavior and messaging techniques. Unpredictable network latency and high communications costs can slow response times in an SOA environment, due to the distributed nature of services. Asynchronous behavior and messaging allow a service to issue a service request and then continue processing until the service provider returns a response.
  • Viewed from the top down, SOA comprises the following constructs, as illustrated in Figure 1.3: consumer, business processes, services, components, information, rules, and policies. Consumers allow invocation or composition of services at the consumer layer through social software, mashups, business processes, or other systems. Business processes represent the flows of activities required to complete a business process; they are compositions of services targeted to achieve business goals. Services are the main structuring element required by a service consumer and are provided by the service provider. Services offer functionality and quality of service, both of which are externalized within service descriptions and policies. Services can be composed of other services, thus making them composite services. Components realize not only the functionality of the services they expose but also ensure their quality of service. Information flows between the layers (for example, consumer, process, and service) and within a layer. Lastly, rules and policies exist for services, components, and flows.

    Although objects are illustrated in Figure 1.3, the word object does not imply an implementation of object orientation, because the object can easily be a procedural subroutine implemented in a multitude of languages as easily as it can be implemented in a object-oriented programming language. SOA must have services and components that realize the services. Processes or flows may string services together to fulfill a step or activity of a business process. For example a transfer of funds service may string together both a debit and credit account service.

    There is also a technology view of SOA. Technology enables SOA, makes it efficient, and optimizes the implementation, but SOA is not defined by the technologies chosen for implementation. Instead, SOA is defined by providing a uniform means to offer, discover, interact with, and use capabilities (services) to produce desired effects consistent with measurable expectations.

    The major technologies associated with SOA include business-focused tools, software construction tools, and middleware technologies. Figure 1.4 illustrates the basic technology building blocks for SOA. Tools are required for SOA addressing design-time and runtime scenarios. Business stakeholders use business-focused tools for modeling and analysis of business processes and flows, and they will also use business activity monitoring technology to gain insights into business performance of processes and workflow. IT practitioners use a set of tools for development of business applications and for managing the operating environment addressing integration, monitoring, and security.

    The DNA of SOA will most likely be further investigated and defined by standards groups actively involved in defining an SOA ontology. For example, see www.opengroup.org/projects/soa-ontology/. Such an ontology will address SOA key concepts, including services, service contracts, service interfaces, composition (orchestration, choreography, and collaboration), processes, service compositions, policies, and events. Each of these makes up the DNA of SOA.

    4. What Is the Difference Between a Web Service and an SOA Service?

    The distinction between business services or SOA services versus a web service is not often articulated, and many equate the two as being the same. SOA services can be realized as web services, but not all web services are equal to SOA services. Web services represent the use of both a published standard and a set of technologies for invocation and interoperability. SOA services are services that fulfill a key step or activity of a business process and can be described as business services and are often exposed as web services.

    Figure 1.3 illustrates both an SOA service and a web service. The picture shows the difference between SOA and web services at runtime (i.e., implementation level) and at design time. The web service is illustrated on the right side of Figure 1.5, specifically the Web Services Description Language (WSDL) and its attributes such as port types and operations. The attribute that makes it a web service is the use of WSDL or equivalent.

    In design, we identify and specify a service that provides the design, or we identify and specify interfaces that include method specifications. The combination of the definition of the method and the interface at design time is what we refer to as a service from an SOA perspective. Use cases can be used to capture the functional requirements for a service. Figure 1.5 contrasts the differences between a service in SOA and a web service. Both SOA services and web services are part of the DNA of SOA.

    In an SOA, business processes, activities, and workflow are broken down into constituent functional elements called services. They can be accessed and used directly by applications, or they can be mixed and matched with other services to create new business capabilities. Business services or SOA services are reusable business capabilities. Examples in banking include open account or change address. For transportation, it might be get reservation or hold reservation, and with loan processing, get loan, apply for loan, and update address are examples of business services. Business processes are also key constructs of SOA, part of its DNA.

    5. What Makes a Project an SOA Implementation?

    The deployment of services makes a project an SOA implementation, where a service is defined in the preceding answer as a web service or an SOA service. The use of the Web Service Description Language (WSDL) or equivalent makes a service a web service. An SOA service must satisfy the criteria described in the Answer 2; namely, an SOA service must be stateless; discoverable; self-describing; composable; loosely coupled; governed; and independent of location, language, or protocol. That is, the use of services alone makes the project or implementation an SOA implementation. However, an SOA implementation may not accrue the desired benefits of SOA around cost savings, reuse, time to market, or flexibility.

    Services can have different levels of maturity. For example, services can be ad hoc in their design and implementation where a WSDL façade is implemented to make function accessible to other systems or applications. Services can also be architected where service modeling and governance are used to maximize service reuse.

    The implementation of SOA technologies without a deployment of one or more services could also be defined as an SOA implementation. This would be atypical because middleware and infrastructure implementations (e.g., a registry or enterprise service bus) would be implemented in conjunction with the deployment of services.

    Just as services have different levels of maturity, so do SOA adoptions within an organization. Some SOA adoptions require a program of projects to address a journey of increasing maturity to achieve strategic SOA goals of building systems for change, infusing flexibility as an attribute of systems, or reducing the lifetime costs of applications and infrastructure. In this case, the program comprises a series of SOA projects that incrementally raise the maturity of SOA in an organization and along the way enable the realization of the strategic SOA benefits.

    Often, because of overselling of SOA, organization leaders, managers, and executives wrongly believe that the benefits of SOA automatically accrue when an SOA implementation occurs. SOA has varied and diverse definitions, and hence its implementations are equally varied. So, organizations seeking to accrue any of the promised benefits of SOA must do more than focus on SOA implementations. That is, each expected benefit of SOA requires a different level of SOA maturity. For example, if the goal is only to reduce the cycle time of a business process that deals with external partners, exposing web services may be the only necessary SOA adoption. However, if the business goal is to reduce time to market for new products, this requires a broader adoption of SOA that addresses reusable services, structuring of applications using services, improving integration using services, and aspects of SOA governance to address service sharing, funding, and ownership.


    First-hand Report about the Certification for SOA Certified Professional (SOACP) of "soaschool.com" | killexams.com real questions and Pass4sure dumps

    This article is a first-hand report about preparing for the SOACP certification and passing the exam. I decided to do this certification after I met Thomas Erl at the SOA Symposium 2010 in Berlin, Germany (see this older blog). I will tell you, why I like this certification and why (in my opinion) it makes a lot of sense. But I will also criticize some small details.

    SOA is Dead? No, it is more alive than ever before…

    In 2009, Anne Thomas Mannes blog „SOA is Dead; Long Live Services“ got a lot of attention. Reading the blog made clear, that Service-oriented Architecture (SOA) is not dead, of course. SOA is no more a hype. Instead of that, SOA is reality and essential for future success of large, long-living IT projects. SOA products are mature and stable instead of early alpha releases. Over the years, many design patterns and best practices were established to make a SOA introduction successful.

    … so you should do a SOA Certification! But which one?

    SOA Certified Professional (SOACP) is a vendor-neutral SOA certification of soaschool.com, which is founded by the well-known author Thomas Erl. His SOA books are the defacto standard within the SOA environment and approved by huge firms with good reputation such as IBM, Oracle, SAP, Red Hat, Yahoo and Microsoft.

    Other SOA certifications exist besides SOACP, e.g. from IBM. I always prefer vendor-neutral certifications. Nevertheless, if you are used to work with IBM products all the time, such a certification may also be a good idea.

    ZapThink also offers a vendor neutral SOA certification. That website also compares its certification to SOACP from soaschool. You should look at this interesting comparison!

    Nevertheless, I prefered doing the certification of soaschool, which contains the information of the defacto standard SOA books instead of ZapThink’s content (which I have never heard before).

    Unfortunately, no first-hand reports from neutral people are available for both, ZapThink and SOACP. Thus, I hope this article will help you gather information about SOACP. And I also hope, that someone will write a first-hand report about the ZapThink SOA certification.

    Different Certifications for different Roles

    A large SOA project requires several different roles. Each specific role has ist own tasks. Different certifications require different modules (e.g. SOA Technology Concepts, SOA Design and Architecture or SOA Security) – and therefore exams – to pass. Certifications are available e.g. for SOA Analysts, SOA Consultants, SOA Architects or SOA Developers. See also soacp.com for a good overview.

    At least five exams must be passed to get such a certification. Some of the modules are „labs“, i.e. real practice work is required (and I like that).

    But you can start with the plain „SOA Certified Professional“ (SOACP) – without a prefix such as Consultant or Developer. This certification requires to pass just two exams (module 1 and an arbitrary second one). The following information experiences are gained from the SOACP…

    Contents of Module 1 and 2

    I will not describe the content. I just list some important headwords and key messages. As mentioned, the exam concentrates on content of the SOA books of Thomas Erl.

    Module 1 (S90.01 – Fundamental SOA & Service-Oriented Computing) contains absolute basic SOA stuff. Nevertheless, this information is very important for everyone working in a SOA project (and actually, many people working in a SOA project do not understand these basics).  In the following, I list some of the facts you learn – and although they should be clear, they are not clear for many people:

  • Strategic goals of SOA (e.g. increased Interoperability, increased organizational agility)
  • Service and Service Composition
  • Service-Orientation Design Principles (e.g. service loose coupling, service reusablity, standardized service contract, service autonomy)
  • Service Delivery Lifecycle
  • Service Consumer and Service Provider
  • Adoption Impacts (e.g. organisational-, infrastructure-, maturity-, migration-, governance-considerations
  • SOA is a concept, not a technology or product
  • SOA is a strategic, enterprise-centric goal (i.e. long-term)
  • Web Service != Service-oriented Architecure
  • Web Service != SOAP Web Service
  • Top-down vs. Bottom-up introduction of SOA
  • Conclusion about Module 1:

    Focusing on concepts, principles and requirements enables you to view the SOA industry with increased clarity. Governance is often the least understood and least planned aspect of SOA. Absence of a governance plan (and budget) can jeopardize the success of SOA initiatives.

    Module 2 (S90.02 – SOA Technology Concepts) contains technical basics (i.e. really basics, just absolute beginner stuff for each technology), e.g.:

  • Service Roles (Consumer, Provider, Intermediary, Initial Sender, Ultimate Receiver)
  • SOAP Web Service vs. REST Web Service vs. Proprietary Components
  • XML, XML Schema, Namespaces
  • SOAP, WSDL and UDDI
  • WS-* such as WS-Addressing and WS-Policy
  • Web Service Contracts
  • Web Service Messaging
  • Message Exchange Patterns (MEP)
  • Orchestration
  • Distributed Transactions
  • Enterprise Service Bus
  • Conclusion about Module 2:

    A good overview about technology concepts is given. But be aware, that it really is an overview. No deep details about XML, WSDL or other technologies (but further module will teach you many details).

    Preparation Material

    A Self-Study Kit is available for every module. It costs 400 USD and contains:

  • A booklet with all content for the exam
  • A second booklet with a summary, questions and exercises
  • At least two Audio CDs (spoken by Thomas Erl, each about 60 minutes), explaining the content and giving some hints for the exam
  • Flash Cards with questions and answers on the back
  • An exam voucher (for one free attempt; expires after twelve months) => An additional attempt costs about 150 USD
  • The fifth module is free, so you can do a certification with five modules for 1600 USD using the self-study kits.

    Additionally, workshops are available all over the world. Price is about as much as workshops from other IT coaching companies.

    Of course, you can also do the certification without self-study kits and without workshops, especially if you have deep SOA knowledge already. But for most people at least the self-study kits are necessary.

    Learning Style

    I used the following methodic while preparing and I recommend you doing the same:

    1.     Read the booklet at least two times (until you really understand everything) – but do not read the sample exam questions at the end of the booklet!

    2.     Listen to Audio CD 1 (content of the booklet, same order of chapters as in booklet)

    3.     Read the booklet again

    4.     Listen to Audio CD 2 (content of the booklet, plus some hints for the exam, random order of chapters)

    5.     Read the booklet again

    6.     Try the flash cards

    7.     Try the sample exam questions of booklet one (do not read these before this point!)

    8.     If you think you are ready, take the exam. Otherwise do more preparations (e.g. read some of the chapters of the SOA books => they explain every fact very detailed). Then try the exam.

    How to pass the Exam(s)?

    Of course, you do a certification to learn something. But you also want to pass the exam. So, here some information:

  • The exam questions are fair
  • You need about 80% to pass a exam (about 40 of 50 questions) => Each exam differs a little bit
  • Questions are: True or False; 1 of X; N of X
  • Time is one hour (more than enough!)
  • Real knowledge is checked, no unfair pitfalls (as e.g. in the SCJP exam for Java SE)
  • If you have some experiences with SOA and XML, you should be able to pass the exam without reading any of the SOA books (probably you already did this earlier in your project). If you are an newbie to XML and SOA, you will have to study the contents in the SOA books. Otherwise, it will be tough to pass the exam
  • I am not allowed to post information about the content of the questions, so please do not ask me!
  • You have to do the exam at a Prometric Test Center. I described my experiences with Prometric in my SCJP blog. Be sure to read this if you have never done a Prometric exam yet.
  • I passed module 2 with 98%, but module 1 with just 82% (80% required), because I had problems with some questions. I cannot tell you if I misunderstood these questions (I am no native english speaker). But sometimes, some „strange“ words or sentences confused me. Thus, contrary to module 2, I was not sure about some answers. I have heard from other people passing module 1 with 95+ %, so probably I had just a bad day.

    Criticism

    My only criticism is the preparation booklet. It simply consists of the slides which are used in the workshops. Thus, you got a DIN A4 paper, but just half of it contains the slide. The slide is intended for a presentation on a beamer. Some graphics are very difficult to read. To be fair, most slides are just text, and there are also many good readable graphics.

    After each chapter, there is a slide which says „do an exercise now“. First you do not understand, what you should do now, because the next slide is is the first page of the next chapter. Is this exercise just for the workshop? No, all exercises are at the end of the booklet!

    Nevertheless: If you pay 400 USD for two booklets and some CDs, you should expect some kind of a real booklet, not just Powerpoint slides. BWT: I know some other certifications of other vendors using the same style. That is very bad practice, in my opinion.

    Besides this criticism, everything else is fine with the exam and I am convinced that every SOA guy should do it!

    Conclusion about SOACP

    You have to understand SOA if you want to introduce or apply SOA. This certification is a great, vendor-neutral opportunity to learn what SOA is – conceptually and technically.

    The final slide of module 1 is a great summary:

    „An SOA initiative does not need to be enterprise-wide to provide benefit, nor does it require the creation of a global data model. Most SOA benefits and ROI [Return on Investment] are long-term investment and impact is up-front. The more up-front effort you put into each service, the less of a governance burden the service becomes. Focusing on concepts, principles and requirements enables you to view the SOA industry with increased clarity.“

    Many SOA projects failed in the past, because people are not familiar with SOA and its concepts – e.g. still many people think that you can build a SOA just by using SOAP Web Services instead of proprietary components. So, if you are new so SOA, you should do this certification to learn SOA concepts. If you already have experience with SOA, you should do this certification (with much less effort than a SOA newbie) to get a confirmation about your SOA knowledge.

    How to continue after SOACP?

    As mentioned, the SOACP just contains basic knowledge of SOA. This is very important, and everybody involved in a SOA project should have this knowlegde.

    Nevertheless, you should continue with other modules to become a SOA Certified Architect (or whatever you want to become). Besides, a Cloud Certification is already available.

    So, what is your opinion about the SOACP and other SOA certifications? Or maybe you also have some experiences with these certifications and want to share them with us?

    Best regards,

    Kai Wähner (Twitter: @KaiWaehner)

    [Content from my Blog: Report about SOACP (SOA Certified Professional of soaschool.com) - Kai Wähner's IT-Blog]



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