Microsoft Corporation (NASDAQ: MSFT) is the world's largest software maker by revenue, with $58.43 billion of revenue in FY2009.^[1] Its software products run the gamut from operating systems for servers, personal computers, mobile phones, and other devices to software development tools, video games, and hardware such as the Xbox 360 and Zune.

Despite the successes of Apple’s client operating system and client and server systems under Linux and other unix-like operating systems, Windows not only continues to dominate its rivals in operating systems but is also growing market share. With the release of Windows 7 in December 2009, Windows finished the year with roughly a 92% market share, as well as an 80% market share among enterprise customers and a 63% market share in web browsing (through Internet Explorer^[2][3][4].

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