This book will therefore serve as both an introductory title and an in-depth reference that will grow with the reader as they begin to create their own Web Services. They will come to understand what Web Services are, where they fit into the 'big picture' and will have many coding examples to choose from within the first five chapters. As they begin to "get serious" about developing enterprise level Web Services, they will be able to refer back to the detailed information about the classes that implement Web Services and come to a deeper understanding of what is happening behind the scenes.