SOA, in practicality web services, is becoming the enabler for application integration. Since the introduction of web services, Apache Software Foundation has played a major role and produced several good web services frameworks. This book covers the defector Java Web Service framework, also known as Apache Axis2. This book covers several important facts that you would want to know about web services and writing, from simple web services to complex web services. By the end of this book, you will have learned about Axis2, its architectures and features, writing and deploying a simple service, writing service extensions and quality of services, POJO and JAX-WS services, clusters, and secure reliable web services.