This book will help IT architects and managers to navigate the choppy waters of IT architecture and middleware, with a focus on objective, practical information that will guide them in developing optimal architectures that blend both new and more mature technologies. When web services entered center stage, it became a fundamental driver for more loosely-coupled architectures. Similarly, the arrival of agile methods also challenged familiar processes. Vendor marketers make it sound easy; but IT professionals will need this thorough, practical book source, to successfully use web services to create loosely-coupled applications, just as they must retain already existing critical processes in the quest to become agile.