IBM Software Group ® SOA – Successful Adoption and Barriers IDC Service-Oriented Architecture Conference 2005 Rick Robinson, IT Architect, IBM EMEA WebSphere Lab Services

IBM Software Group | WebSphere software Agenda What works? Barriers Roadmaps Summary

IBM Software Group ® What Works? Business scenarios, technologies and governance

IBM Software Group | WebSphere software What Works? Business Scenarios Multi-channel Multiple technology channels, e.g. desktop, browser pervasive Multiple brands Intermediary, B2B or dot.com models Small to large Service aggregation e.g. financial portals dot.com integration e.g. Amazon, e-Bay New Applications Well-targetted process automation Integration or Consolidation Bottom-up integration architectures of reasonable ambition Single view of data

IBM Software Group | WebSphere software Legacy e.g. CICS routing transaction using simple structured data formats … increasingly migrating to Web services Enterprise Application Integration (EAI) XML interfaces and message formats Communication through EAI technology e.g. asynchronous messaging Custom API frameworks provide application support … increasingly migrating to Web services Web services Many current uses of Web services are for basic point-to-point integration Some more advanced organisations have built SOA infrastructures with extensive use of Web services … becoming more common as Web services mature What Works? Technologies

IBM Software Group | WebSphere software Reseller channels, e.g. supermarkets Branches Online bank Corporate Bank... etc.... Service Gateway Account Management Payments etc. Operations Director Channel Owners System Owners What Works? Aligned Service and System Ownership One layer of services Organisation matches service architecture Obvious owners of services and supporting infrastructure

IBM Software Group ® Barriers Mismatches, trust and … governance

IBM Software Group | WebSphere software Barriers: Mismatches Narrow drivers, broad ambition Are current business goals to reduce cost or develop new business? Is the level of sponsorship consistent with the scope of impact? Inappropriate combinations of risk Pilot project, new technology Production project, conservative technology Many other combinations! Scepticism – adopting SOA successfully requires cultural change Its nothing new The technology doesnt work Its not for us

IBM Software Group | WebSphere software Barriers: Trust Application Service 1Service 2 Change to irrelevant optional schema Service 3Service Z No need to test Test If SOA uses intermediaries to insulate service consumers from changes to service implementations, how do services consumers know when to re-test? Until services are trusted, regression testing will be performed in all cases Automated testing scripts and tools can be used to minimise impact Change to relevant optional schema or mandatory schema Service implementation changed or substituted

IBM Software Group | WebSphere software Barriers: Governance Store Client (Catalogue) Sales Management Client Store Client (Orders) Product Management Client... etc.... Service Bus Order Services Product Services etc. Pricing Services Accounts Product Management etc. ERP No clear point of ownership for common services Infrastructure owned by IT, clients and back end systems owned by lines of business Tends to result in a proliferation of variations of common services dedicated to specific channels

IBM Software Group | WebSphere software ITA SOA Project Barriers: Governance Enterprise Architecture Group Our strategy is SOA I need a new mortgage system

IBM Software Group ® Roadmaps

IBM Software Group | WebSphere software There is no roadmap … Standards Based Model for all Service Interaction Aspects Important aspects include protocols, interface definitions, message formats, APIs, directories etc. Service Enable Legacy Systems and Applications Analogous to JDBC enablement of databases for J2EE Implement a High Quality of Service Infrastructure Asynchronous messaging, assured delivery, security, transactions and compensation etc. Establish a comprehensive model and implementation of different types of service Business process vs. business transaction vs. technical service vs. external service vs. legacy service etc. Service directory and re-use strategy Establishing the development culture, publishing and discovering services, internally and externally etc. Establish organisations and processes for governance and ownership Enterprise Architecture governance, service ownership etc. … but there are many individual steps to take in an order that makes sense to your organisation.

IBM Software Group ® Summary

IBM Software Group | WebSphere software Summary SOA has been repeatedly proven over the last decade (at least!) Open standard and product support is increasingly rapidly in sophistication and maturity In its broadest form, SOA is an approach to Enterprise Architecture, and there is no skirting the difficult issues associated with that But a big-bang approach is not mandated … … a flexible, incremental approach moulded to business needs and strategy is the most likely to succeed

IBM Software Group ® End

IBM Software Group | WebSphere software

Timings 3 minutes intro 3 slides in first section finish on 5, 7, 9 minutes 1 minute bridge 4 slides in second section finish on 12, 14, 16, 18 minutes 1 minute bridge 1 slide in last section finishes on 21 minutes 4 minutes wrap-up and contingency