Soa 18 soa trends
- 1. Service Oriented Architecture: 18 SOA Trends Prof Neeraj Bhargava Vaibhav Khanna Department of Computer Science School of Engineering and Systems Sciences Maharshi Dayanand Saraswati University Ajmer
- 2. THE INEVITABLE SOA TREND • SOA is one of the most important trends in Information Technology today. • SOA is now a top priority in most organizations. • SOA is receiving all this attention because of the great potential value it offers to those who pursue it. • If an organization achieves a mere fraction of the total potential value of SOA, it will be significant to that organization's bottom line, competitive posture, and overall operational effectiveness. • That is why SOA is such an important strategic initiative to pursue. SOA makes too much sense technically and financially .
- 3. SOA Re-defined • We may re-define SOA as a combination of a Business Model, an IT strategy, an architectural approach, and an implementation pattern, all predicated on the concept of "Services.“ • SOA is a concept for development of software systems – Using reusable building blocks (components) called "services" • Services in SOA are: – Autonomous – Stateless business functions – Accept requests and return responses – Use well-defined, standard interface
- 4. SOA Services • Autonomous – Each service operates autonomously – Without any awareness that other services exist • Stateless – Have no memory, do not remember state – Easy to scale • Request-response model – Client asks, server returns answer
- 5. SOA Services • Communication through standard protocols – XML, SOAP, JSON, RSS, ATOM, ... – HTTP, FTP, SMTP, RPC, ... • Not dependent on OS, platforms, programming languages • Discoverable – Service registries
- 6. SOA and Business Processes Management (BPM) • Composite applications – Assembled form a set of services combined to support a business process – Business agility • Allows quick reaction to changes • Business Process Management (BPM) – Composite applications support • Process orchestration, execution, monitoring and optimization
- 7. Loose Coupling • Loose coupling – main concept of SOA • Loosely coupled components: – Exhibits single function – Independent of other functions – Through a well-defined interface • Loose coupling programming evolves: – Structural programming – Object-oriented programming – Service-oriented architecture (SOA)
- 8. SOA and Web 2.0 • Moving to a "services model" – global IT trend for both: – Internet business – Inside an enterprise • Two main SOA scenarios – SOA in Internet • Software as service, Web 2.0, RIA, ... – SOA inside an enterprise • Heavy SOA stacks: WS-*, BPM, BPEL, WCF, SCA, ESB, ...
- 9. Trends for service-orientation of the IT business
- 10. SOA in Internet • Internet companies implement lightweight SOA in Internet – Also called WOA (Web-Oriented Architecture) – Examples: Google, Amazon, Facebook, ... – Tend to provide software as service – Based on lightweight Web standards: • AJAX and Rich Internet Applications (RIA) • REST, RSS, JSON, proprietary APIs
- 11. SOA in Enterprises – Driven by business processes: BPM, BPMN, BPEL, ... – Enterprise application integration (EAI) – B2B integration – SOA based portals – Unified Frameworks: SCA and WCF – Enterprise Service Bus (ESB) – SOA governance (control)
- 12. SOA Adoption • Why SOA adoption is slow? – SOA is a Customized Application technology • It is a better approach to IT – SOA is not a "buy" solution • It is a "build" solution • Purchasing a SOA platform product can not turn IT infrastructure to SOA – Slow migration trend to SOA • New software is build with SOA in mind • Old software is adopted to support SOA
- 13. Obstacles in SOA Adoption • Obstacles to SOA adoption in enterprises – Need of new thinking for the IT – Resources, tasks, budgets and skills need to be shared across projects and not dedicated solely to a single project – Unclear return of investments (ROI)
- 14. SOA Infrastructure Trends • Virtualization will impact SOA deployment • Computing clouds will impact SOA – Amazon and SalesForce already have "computing clouds" solutions • SOA scale-out infrastructures build on low- cost hardware adoption – Google, eBay, Amazon and PayPal already have such technology
- 15. SOA Technology Trends • Adoption of SOA patterns and EAI patterns • Open source SOA products will get more market share • In Java world: increase of OSGi adoption • In Microsoft world: WCF adoption • Domain-specific languages for SOA • Adoption of lightweight technologies (REST, JSON, ...) will run in parallel with adoption of SOAP and WS-* technologies – Abstract APIs like WCF and SCA will emerge
- 16. Assignment • Discuss in detail the general trends in SOA Adoption by Enterprise Business. • Thank You