Enterprise SOA

Preface

Organizing and explaining all of the wisdom about Enterprise Services Architecture clearly and directly was a major challenge that required several innovations. To help this book to serve the needs of a broad audience from business analysts to enterprise architects, we have employed a question-and-answer format for the chapters to help readers find the portions of the book that are right for them. To partition ESA into more digestible portions, we have boiled everything down into six concepts, each with its own section in the book:

• Part One, The Context for ESA, covers new ways of thinking about IT and explains how you must plan for ESA.

• Part Two, Conceiving a Vision for ESA, delves deeper into the technical aspects of ESA.

• Part Three, Consuming Services, explains simple ways to use services to create value.

• Part Four, Composing Services, covers the way that composite applications are constructed from services.

• Part Five, Creating Services, explains how services are created and managed.

• Part Six, Controlling Services, discusses new forms of governance based on services, as well as life cycle management, operations, security, and standards.

Inside each section are the following chapters:

Part One, The Context for ESA

Chapter 1, ESA in the World of Information Technology, provides an explanation of the forces that led to the creation of ESA and how it fits into the world of enterprise computing.

Chapter 2, The Business Case for ESA, is a summary of the business value of ESA.

Chapter ...