This list does not include the investment in Facebook.com that Microsoft made earlier this year.

  • aQuantive, Inc, Seattle, USA - May 2007 - Global digital marketing and advertising solutions. Microsoft’s largest acquisition in history so far, valued at $6 billion
  • Tellme Networks, Inc., California, USA - March 2007 - Voice services, Estm. $800 million
  • Rare Ltd., United Kingdom - September 29, 2002 - Video games - $375 million
  • Navision Software A/S, Vedbaek, Denmark – May 21, 2002 - Business applications, ERP - $1.45 billion
  • Great Plains Software Inc., Fargo, North Dakota - April, 2001 - Business applications, accounting - $1.4 billion
  • Visio Corp., Seattle, Washington - September 15, 1999 – Enterprise-wide business diagramming and technical drawing software - $1.4 billion
  • LinkExchange Inc., San Francisco, California - November 5, 1998 - advertising network - $250 million
  • WebTV Networks Inc. Mountain View, California- April 6, 1997 - Enhanced TV services using Internet and digital technologies - $425 million
  • Hotmail Corp., Sunnyvale, California, - January 3, 1997 - Webmail service - $395 million