Dr. Jim Webber is an architect and Web Services fanatic at Arjuna Technologies where he works on Web services transaction and Grid computing technology. Prior to joining Arjuna Technologies, he was the lead developer with Hewlett-Packard working on their BTP-based Web Services Transactions product - the industry's first Web Services Transaction solution. An active speaker and Web Services proponent, Jim is the coauthor of "Developing Enterprise Web Services" and of the WS-CAF suite of specifications. Jim holds a B.Sc. in Computing Science and Ph.D. in Parallel Computing both from the University of Newcastle upon Tyne.