Apache Sandesha is the implementation of the WS-ReliableMessaging protocol and sits on top of Axis, the Apache Web services core engine. As Service Oriented Architectures (SOA) gain momentum, the need for robust communication is a key factor. Jaliya Ekanayake delves in to reliable messaging architectures in this article about Apache Sandesha. http://www-128.ibm.com/developerworks/library/ws-apache-sand/ [1]