Stephen Mohr is a senior software systems architect with Omicron Consulting and XMLabs in Philadelphia, USA. He has more than 15 years of experience developing software and systems for various platforms. Stephen is the author of numerous books for Wrox and Que and has spoken at a variety of international conferences. He has research interests in distributed computing using service-oriented architectures. Stephen holds BS and MS degrees in computer science from Rensselaer Polytechnic Institute.