This book focuses on one major technical value of SOA and doing an excellent job describing SOA-based application integration by clarifying relationships and patterns of SOA with other integration technologies for distributed computing environments. "Sandra Carter, Vice President of IBM SOA, BPM, and WebSphere Marketing "Service-Oriented Architecture is a lot of the current challenges in the integration of existing systems and new systems, along with many times, the old mainframe legacy applications. This book discusses a lot of work complexity we see in the integration of SOA and mainframe legacy applications, presents options and approaches for integrate with all enterprise applications.