American multinational corporation headquartered in Redmond, Washington, United States that develops, manufactures, licenses, and supports a wide range of products and services related to computing. It is the largest software corporation in the world measured by revenues. The company was founded by Bill Gates and Paul Allen on April 4, 1975.Microsoft is market dominant in both the PC operating system and office suite markets (the latter with Microsoft Office). The company also produces a wide range of software applications for desktops and servers, and is active in areas including internet search (with Bing), the video game industry (with the Xbox and Xbox 360 consoles), the digital services market (through MSN), and mobile phones (via the Windows Phone OS). In June 2012, Microsoft announced that it would be entering the PC vendor market for the first time, with the launch of the Microsoft Surface tablet computer.