Jim Conallen is the Web Modeling Evangelist at Rational Software Corporation, where he has continued his work on the development of the Web Application Extension for the Unified Modeling Language. Prior to joining Rational, he was a consultant specializing in full life cycle object-oriented development. He has built client/server and web-based systems in the transportation, telecommunications, and health care domains; has architected large, high-volume transaction processing systems; and has designed and developed applications in C++, Smalltalk, Java, Delphi and Visual Basic. Jim is a frequent speaker on topics ranging from web application modeling to software best practices. He has written for many industry publications, including ASPToday.com, Rose Architect, and Communications of the ACM.