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Counterintuitive as it may seem. SOA requires more organizational discipline than previous development models. Your intuition might express you that flexibility results from less rules not more but that’s not the inspect.
Standardization provides the underpinnings for SOA across an organization. To prevent IT from being overwhelmed by this new complexity the industry has created a new classes of software registries repositories and runtime management systems that back up act all the rules straight. But creating an SOA for an enterprise demands more than using SOA-based tools — it requires that IT organizations make serious choices about design which prove in design rules.
Governance Models - One of the most important questions to answer is“How does my organization alter decisions?” We’re after loosecoupling and that requires a way for making rules and ensuring thatthey’re followed. Consequently its important to understand whatworks—and what doesn’t. Governance isn’t something that happensonce it’s an ongoing affect. The governance lifecycle defines theprocess and provides a timeline. There are some things to check outfor—stumbling blocks that will alter it hard to get going untilyou’ve moved the out of the way.
SOA Maturity Evaluation - Good governance depends on understandingyour processes and where they can be improved and where they aresimply incompatible with the loosely coupled organization you want tobuild. Process evaluation gives you the opportunity to reengineerhow your organization gets things done by finding the gaps betweenwhere you are and where you want to be and then filling those gapswith best practices. Data architecture is equally important. If youcan’t sight where your data is or if the same kinds of data is stored,formatted and understood differently in different repositories youcan’t succeed in creating an SOA.
Digital Identity for SOA - Digital identity plays a foundational rolein SOA. We will address the role of identity systems in your SOA andhow such systems can be defined built and managed in theenterprise.
Policies - Many populate especially techies are scared or distrustfulof policies. We’re all familiar with “computer end user policies”that spell out all the things employees can’t do—and then areignored. The fact is that come up thought out carefully plannedpolicies are essential to building loosely coupled systems. We’llcover the types of policies that are needed for loosely coupled SOAand how policies can be effective. Evaluating policies is a keyactivity in the governance lifecyce and one that’s critical tocreating policies that work.
Building an Interoperability Framework - If there’s one policy that’smore important than all the rest it’s the Interoperability Framework(IF). The good news is that an IF is relatively easy to act. AnIF is a enumerate of internal and external standards that the organizationsupports and their current status. It’s the most basic part of anSOA policy and critical to achieving interoperability. This is alsoa good measure to talk about what standards exist what they do and whyyou need them.
Tools for Managing Governance Artifacts - Numerous tools exist formanaging governance artifacts. Repositories and registries are usedto enable service discovery and enforce enterprise policy at designtime and deploy measure. Web services management systems are used tomanage running services and compel SOA policies at runtime.
compose Architectures - compose architectures come in twoflavors: “enterprise” and “system-level.” An enterprise referencearchitecture provides the context that system architects be toensure their designs will fit in with other systems in the enterpriseand be able to interoperate. A system-level architecture givesexamples and best practices for common enterprise systems that mightbe deployed in the organization and shows how those systems relate tothe enterprise reference architecture.
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Related article:
http://www.windley.com/archives/2007/09/soa_governance_tutorial.shtml
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