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Current State of Affairs in SOA Along with Migration Strategies and Methodologies

Explore the current state of SOA and learn about effective migration strategies and methodologies. Discover the use of OASIS standards and the maturity of various products and tools in the SOA landscape.

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Current State of Affairs in SOA Along with Migration Strategies and Methodologies

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  1. www.oasis-open.org Current State of Affairs in SOA Along with Migration Strategies and Methodologies John Harby

  2. John Harby John Harby is currently working with MIRO Technologies, a global aerospace defense contractor headquartered in San Diego. He specializes in the SOA and middleware areas. He is a member of several OASIS Technical Committees and is also on several JSR expert groups. He was co-author of The Middleware Company SOA Blueprints initiative. He has previously worked in product development for vendors including Oracle, BEA Systems and was a Sr. Architect in the HP Web Services (e-speak) lab. His first experience in SOA was in the mid-90's developing systems for U.S. Intelligence using CORBA/C++

  3. PGFSOA • Practical Guide to Federal SOA • Are using OASIS standards such as the SOA Reference Model • <hint>Still accepting volunteers</hint>

  4. The Standards have Arrived • OASIS SOA RM, SCA, SDO • WS-Transaction • WS-Addressing • Etc.

  5. Product Maturity • Orchestration – IBM, BEA, Oracle, et al are maturing • Registries, ESBs, etc. also no longer new • Many support tooling now exists, e.g. management tools

  6. Open Source Contributions • JBoss – jBPM, ESB • Mule ESB • ServiceMix • Synapse

  7. External to Technology • Governance • Methodologies • Management

  8. REST Approach • Further decoupling through abstraction of contract • Lack of declarative standardization • Can one use REST within SOA?

  9. Practices, What Works? • Choose pilots carefully • Governance always comes first • Vendor selection matters even more

  10. Practices, What Works? • SOA as a pattern • Migration strategies • Platform integration

  11. Novel approach – AOP/SOA • Services can be woven rather than orchestrated. • Especially useful for lightweight services with many join points. • Examples, logging, properties, etc. The Jaffa framework employs some of these strategies.

  12. REST – Friend or Foe • REST exhibits more simplicity than the other alternatives • REST offers further decoupling than SOAP/WSDL/etc. • REST potentially violates the SOA contract requirements

  13. ROA vs. SOA • My opinion is to strive for a blend • OASIS SOA-RM: “A contract … represents an agreement by two or more parties” • Does the level of abstraction of the contract really matter?

  14. Why does this matter? • Adds capability to the SOA • Further enablement of end-end enterprise architecture

  15. Platform migration • Seek a generalized methodology • Migration strategies are available • Initially target the “low hanging fruit”

  16. SOA Migration Path

  17. SOA Migration Path

  18. SOA Migration Path

  19. Some Interesting Links • Web Methods SOA Master Class:http://www.soamasterclass.com/index.php?option=com_content&task=view&id=74&Itemid=88888964 • Estimate SOA costs:http://weblog.infoworld.com/realworldsoa/archives/2006/11/how_much_will_y.html • REST FAQ:http://rest.blueoxen.net/cgi-bin/wiki.pl?RestFaq • Two IBM SOA success stories:http://www.soainaction.com/blog/2007/03/post_4.php • Web Services Standards poster:http://www.innoq.com/soa/ws-standards/poster/

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