David Orchard is senior technical director in BEA Systems’ CTO Office, focusing on web and web services standards. He is currently serving a 3rd term on the W3C Technical Architecture Group and is active in numerous standards activities. He is currently or has been a co-editor of various SOAP 1.2, WSDL 2.0, WS-Policy, WS-Addressing, WS-ReliableMessaging, WS-Eventing, WS-MetadataExchange, XML Schema, Web Services Architecture, XML Link, XInclude, SOAP-Conversation specifications. He has written numerous technical articles and is a frequent speaker on various internet related technologies.