Jack Greenfield is an Architect for Enterprise Frameworks and Tools at Microsoft. He was previously the Chief Architect of the Practitioner Desktop Group at Rational Software Corporation, and the Founder and CTO of InLine Software Corporation. At NeXT, he developed the Enterprise Objects Framework, now known as Web Objects from Apple Computer. A well known speaker and writer, Mr. Greenfield is also co-author of the book "Software Factories: Assembling Applications with Patterns, Models, Frameworks and Tools" published by John Wiley and Sons. He has contributed to UML, J2EE and related OMG and JSP specifications. He holds a B.S. in Physics from George Mason University. (VD)