This book spells out guidelines and strategies for successfully using Service Oriented Architecture (SOA) in large-scale projects. SOA represents the latest paradigm in distributed computing and middleware development. However,SOA is not a revolution, but rather an evolution in software architecture. SOA is a collection of best practice software construction principles accompanied by proven methodologies in development and project management. This book is unique in that it offers a pragmatic approach to the topic. The authors borrow from their more than forty years of collective enterprise experience, and offer a frank discussion of the challenges associated with adopting SOA. They also help readers ensure that their organization does not become too closely tied to a specific technology. The result is a detailed introduction to the topic and an architectural blueprint for implementing SOA.