David Gurle has announced that he will be leaving Microsoft to join Reuters Group as executive vice president and global head of collaboration services effective April 1. Gurle has served as head of the Microsoft Corp. team that is developing the real-time communication platform code-named Greenwich; Reuters was an early beta customer of Greenwich. Gurle has also served as director of program management, real-time communication at Microsoft, and led product teams for Greenwich, Exchange IM (instant messaging), Exchange Conferencing Server, Windows Messenger, NetMeeting and the Microsoft Telephony API. Gurle joined Microsoft in in 1999 from VocalTec Communications, where he was vice president of business alliances. At Reuters, Gurle will lead the global team responsible for the business and technical aspects of Reuters Messaging product development, deployment, and service initiatives.