Major changes in technology have not been driven by the technologies themselves but by the change in thinking that they enabled. OO design changed software by changing thoughts away from procedures and onto real world "things". This book argues that for SOA to succeed we must move our thoughts away from the implementation technologies and towards the "what" of the business. Using a straight-forward, pictorially driven, methodology the book explains who to discover what the business services really are and how to construct an overall business service architecture. The book covers defining the Business Service Architecture, how to classify services for business value and delivery, understanding the role of IT in supporting the architecture, how project and portfolio management needs to change, how to use a Service Architecture to identify KPIs, and how and when to use Business Process in a service architecture.