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SoAgile
- 1. SOAgile XP days 26 November 2010 www.abc-thinkBIG.com info@acb-thinkbig.com ladybeetle2u@gmail.com
- 2. Agenda, time
- 3. Agile core values “We are uncovering better ways of developing software by doing it and helping others do it. Through this work we have come to value: • Individuals & interactions over processes & tools • Working software over comprehensive documentation • Customers collaboration over contract negotiations • Responding to change over following a plan That is, while there is value in the items on the right, we value the items on the left more.” source: Agile Manifesto (www.agilemanifesto.org)
- 4. Agile core value Responding to change…… SOA is all about change as is the way to implement it
- 5. SOA Core values “Service orientation is a paradigm that frames what you do. Service-oriented architecture (SOA) is a type of architecture that results from applying service Orientation. We have been applying service orientation to help organizations consistently deliver sustainable business value, with increased Agility and cost effectiveness, in line with changing business needs. Through our work we have come to prioritize: • Business value over technical strategy • Strategic goals over project-specific benefits • Intrinsic interoperability over custom integration • Shared services over specific-purpose implementations • Flexibility over optimization • Evolutionary refinement over pursuit of initial perfection That is, while we value the items on the right, we value the items on the left more.” Source: Soa Manifesto (www.soamanifesto.org)
- 6. SOA design principles • Loose coupling • Service contract • Autonomy • Abstraction • Reusability INTER OPERABILITY • Compose ability • Statelessness change ability • Discoverability
- 7. Business reasons for SOA* • Improved (technical) flexibility, adaptiveness • Increased revenue / profit • Reuse of existing services • New product or service development • Compliance and Governance • Cost reduction • Alignment * UWV, SOA what?, Beijleveld SOA for profit, van den Berg et al
- 8. Customer, value, early • highest priority: satisfy customers through early and continuous delivery of valuable software. • Agile focus: on a single project / product and SOA focuses on the enterprise as a whole this principle aligns perfectly with SOA principles
- 9. Change • Agile processes harness change for the customer's competitive advantage. • The reason for SOA is the ability to change: “corporate” agility, flexibility, adaptiveness
- 10. Frequent delivery • Deliver working software frequently, from a couple of weeks to a couple of months, with a preference to the shorter timescale. • Services are smaller chunks of functionality, delivered incrementally and iterative for business
- 11. Working together Business people and developers must work together daily throughout the project. Corporate strategy is formed by business and IT together; SOA project only succeed when people work together, services can only be realized in cooperation.
- 13. Motivated people and trust • Build projects around motivated individuals. Give them the environment and support they need, and trust them to get the job done. • Motivation &trust is needed, that is a fact of life. Rely on services other deliver, trust colleagues expertise to reuse services not designed or developed by you
- 15. Face to face interaction The most efficient and effective method of conveying information to and within a development team is face-to-face conversation. However SOA doesn’t say anything about this, face to face conversation is a condition for success as any achievement. A common vocabulary helps.
- 17. Sustainable pace! • Agile processes promote sustainable development. The sponsors, developers, and users should be able to maintain a constant pace indefinitely. • This healthy principle should be promoted in any project. Happy workers are more successful, work smarter and deliver better www.abc-thinkBIG.com
- 18. Measure Working software is the primary measure of progress. SOA defines services as the main deliverable. You build software that supports the service.
- 19. quality • Continuous attention to technical excellence and good design enhances agility. • SOA demands a high level of technical excellence for interoperability
- 20. Simplicity Simplicity--the art of maximizing the amount of work not done--is essential. A service is a realization of simplicity: a small loosely coupled, autonomous, compose able piece
- 21. Self organizing The best architectures, requirements, and designs emerge from self-organizing teams. This principles seems to contradict an enterprise architecture approach like SOA. But, a bigger picture from product owner perspective, is really necessary.
- 22. retrospective • At regular intervals, the team reflects on how to become more effective, then tunes and adjusts its behavior accordingly • SOA give the team a concrete product and a set of principles to measure quality, to talk about.
- 24. Conclusions • Agile makes SOA more adaptive to change • Agile + SOA nourishes cooperation with customer and transparency • SOA standards facilitate Business Agility • Agile prevents SOA getting tool specific • Agile + SOA give focus on results SOA won’t work without Agile Agile & SOA works best together SOA + Agile keep each other sane & in balance
- 25. Some conditions for success • Organizational Mindset Change • Management view: learning oriented • Engaged & responsible people = disciplined people and not: NIH, BOHICA • Focus on business value and quality • Neither religious Agile, nor religious SOA • Proof by delivering the valuable services / software • Celebrate success
- 26. QA discuss www.abc-thinkBIG.com