Service-oriented middleware for hybrid environments

This paper discusses the challenges facing hybrid, dynamic environments with regard to handling stateful resources and contextual interactions and describes strategies we have and are developing to enable applications to exist in these diverse environments. In particular we describe how combining Grid computing and Web services technologies with Peer-to-Peer technologies can be used to create flexible and dynamic Service Oriented Architectures that support stateful interactions in a loosely coupled way. We describe WSPeer, a SOAP based middleware that enables sophisticated message exchanges in Peer-to-Peer environments, and introduce WSKPeer, a micro-edition of WSPeer currently under development