State Of Services
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The document provides an overview of the state of service-oriented architecture (SOA) as of November 2009, highlighting the evolution and significance of standards like ws-* in achieving interoperability in complex system integrations. It discusses the role of WSO2 as an open-source platform supporting SOA and positions cloud computing as an innovation that enhances the concept of loose coupling in services. The author emphasizes that implementing SOA requires a strategic approach rather than simply acquiring technology, promoting a culture of building solutions tailored to specific organizational needs.
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State Of Services
- 1. State of Services 12 th November, 2009 Sanjiva Weerawarana, Ph.D [email_address]
- 2. Who Am I - Overview Affiliations: Founder, Chairman & CEO of WSO2 Founder & Chief Scientist, Lanka Software Foundation Visiting Lecturer, Univ. of Moratuwa, Sri Lanka Member, Apache Software Foundation (Emeritus) Director, Open Source Initiative Previously 8 years at IBM Research Co-author of WSDL, BPEL4WS, WS-Eventing, … Founder of Apache SOAP and Apache Web services Member, IBM Academy of Technology November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 3. Partnership with CA WSO2 technology is what powers CA Catalyst Integration product to integrate CA products together (But I wasn’t invited here with that knowledge!) WSO2 products used WSO2 Enterprise Service Bus WSO2 Web Services Application Server WSO2 Governance Registry WSO2 Business Process Server November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 4. About WSO2 Founded in 2005 by pioneers in XML and Web services technologies & standards as well as open source Founders & lead contributors to Apache Web services projects Offering complete SOA platform, 100% free and open source Business model based on providing training, consultancy and support for the WSO2 products Global corporation with R&D center in Sri Lanka and offices in US & UK comprising of 75+ people $6m investment by Intel Capital November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 5. WSO2 Product Platform November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 6. Agenda Introducing SOA – 10 years later Standards and the standardization saga REST vs. WS-* Technology and standards adoption Implementing SOA SOA & Cloud Computing: dark cloud or silver lining? Looking ahead into the next 10 years Summary November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 7. A bit of history from 1999 Web is everywhere XML is real XML + HTTP used to exchange business messages Every vertical domain has their own security, reliability and transactions protocol for XML+HTTP: OTAA, HL7, TPAML, … WS-* is born as attempt to standardize these protocols SOAP envelope to carry things WSDL language to tell others what you have Various protocols to make the stack complete November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 8. Service Oriented Architecture First mention of SOA in modern context in 2000 by Steve Burbeck of IBM: Fundamental concepts of SOA are not new Paul & I wrote a CACM paper about doing SOA with CICS! November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 9. Service Oriented Architecture SOA is the best practice for building distributed interconnected systems Using well-defined interactions between systems Moving from proprietary formats to open formats: XML, HTTP, SOAP Integration is dependent on external interfaces not on internal code SOA is the basis of all modern Enterprise Architecture November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 10. Services Services are application assets that provide useful function The service is not just the software… it is the running system Services are accessible in a common way across the network and organisation Services are re-usable building blocks that can be re-used to build other applications November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 11. Standards and standardization November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 12. Standards and standardization Standards are critical to achieve “well-defined interactions” WS-* is the interoperable standards family for SOA But not the only way to do SOA However this is the “English” of the system integration world Or the IP of the network protocol world November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 13. Standards and politics WS-* platform specification creation lead by Microsoft & IBM Small team defines an initial draft spec Feedback solicited from closed community of external partners Result published as a draft Iteration de facto standard Submit for de jure standardization Publish as standard Other big guys (notably Oracle and Sun) not happy! November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 14. “ Standards” galore: 150+! November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 15. SOA Standards – Courtesy of Thomas Erl November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2 Source: http://www.ws-standards.com/relationship2.jpg
- 16. Standards – 10 years later Core platform now de jure standards SOAP, WSDL, WS-Policy, WS-Addressing, WS-Reliable Messaging, WS-Security, SAML, … Do they work? Tremendous efforts put into interoperability testing by both standards organizations and (especially) Microsoft Lots and lots of success stories published A few edge cases still remain here and there Vendors have demonstrated true dedication to achieving practical, “it just works”, interoperability November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 17. REST vs. WS-* Representational State Transfer Underlying architecture of the Web Lighter weight approach to integration using the Web directly instead of “tunneling” a new abstraction over the Web If the shoe fits, put it on .. REST does not provide same QoS as WS-* New entrant: rest-star.org But if its good enough for the problem, use it WSDL 2.0 can describe REST services Big battle in years 6-9, now everyone has moved on .. November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 18. Technology & standards adoption WS-* powered SOA now accepted as the de facto standard for complex system integration problems First time in history of computing that every vendor supports the same set of interoperability protocols Core platform adoption is solid Basics (SOAP, WSDL, Policy) Security Reliability Transactions adoption is growing UDDI is dead with no real replacement (maybe little need?) November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 19. Gartner’s 2009 Technology Hype Curve November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 20. Implementing SOA November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 21. Implementing SOA Common mantra: “You can’t buy SOA, you have to build it” SOA is not a technology, its an approach! It is best enabled by the use of a set of interoperable technology standards but just using them does not make your system an SOA solution November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 22. Focus on loose coupling during design implementation Location and Access Scale up, failover, contingency Programming Language Work with available skills Integrate old and new Stack/Vendor No tie in to a particular proprietary solution Time Asynchronous interactions avoid gridlock November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 23. Good SOA implementation patterns Thin slice implementations “ Guerilla SOA” Iterative project plans Prove the concept to the business KISS November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 24. SOA and Cloud Computing November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 25. Evolving computing landscape November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 26. Software distribution channels Download and run on customer hardware Data center: Private Resource sharing: None implied Scaling: Single to cluster Buy appliance and plug-in Data center: Private Resource sharing: None Scaling: Single box Buy virtual machine and run on cloud platform Data center: Private or public Resource sharing: Virtual machines Scaling: Single to cluster to elastic Software as a service Data center: Public Resource sharing: Multi-tenant Scaling: Cluster or elastic November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 27. SOA & cloud computing November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 28. Into the future … November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 29. In 10 years … XML & WS-* based SOA will be the like Java is today for server-side application development English v1 is firmly established Most of the world is speaking good English Impedance mismatch between programming languages and communication modalities will force a new English to be formed XML-*.next + Java.next + WS-*.next + SQL.next all in one package that makes distributed application development truly seamless Entire process will start again … November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 30. Summary WS-* powered SOA is the new English of the computer world Phenomenal adoption and vendor support in a short time Cloud computing takes loose coupling to another dimension, augmenting SOA Build, DO NOT BUY, SOA November 12, 2009 State of Services Copyright © 2009 EDGEAPJ and WSO2
- 31. Questions Email: [email protected] Web: http://wso2.com Blog: http://sanjiva.weerawarana.org/