Paul Leach is an architect at Microsoft Corporation. He was one of the founders of Apollo Computer, where he was the architect for their Domain distributed system and the NCS and DCE RPC systems. Since joining Microsoft, he has worked on their Distributed COM and Interactive TV efforts. He is currently working on Internet-related advanced development projects and is a member of the IETF HTTP Working Group, the W3C HTTP-NG design team, and the IRTF Internet Information Architecture research group. He also holds an appointment as auxiliary professor in the Department of Computer Science and Engineering at the University of Washington.