Jim Webber is a director with ThoughtWorks where he works on dependable distributed systems for clients worldwide. His current interests are in using the Web for building distributed systems, but he was formerly a senior researcher with the UK E-Science programme where he developed techniques for large-scale high performance computing. As an architect with Hewlett-Packard, and later Arjuna Technologies, Jim was the lead developer on the industry's first Web Services Transaction solution. Jim is an active speaker and presents regularly at conferences across the globe and is an active author having written Developing Enterprise Web Services - An Architect's Guide prior to REST in Practice. Jim holds a B.Sc. in Computing Science and Ph.D. in Parallel Computing both from the Newcastle University. His blog is located at http://jim.webber.name and he tweets often @jimwebber.