If you'd like to learn how to create web services (in particular, using Apache Axis2) and make some sense of various standards like SOAP, WSDL, MTOM, WS-Addressing, WS-Security, WS-Policy, XML Encryption and XML Signature, then this book is for you. Why? First, it has a tutorial style that walks you through in a step-by-step manner. Second, it is concise. There is no lengthy, abstract description. Third, Many diagrams are used to show the flow of processing and high level concepts so that you get a whole picture of what's happening.