Microsoft Corporation is a public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions. Established on April 4, 1975 to develop and sell BASIC interpreters for the Altair 8800, Microsoft rose to dominate the home computer operating system market with MS-DOS in the mid-1980s, followed by the Microsoft Windows line of OSs. The ensuing rise of stock in the company's 1986 initial public offering made an estimated four... billionaires and 12,000 millionaires from Microsoft employees. Microsoft would come to dominate other markets as well, notably the office suite market with Microsoft Office. Primarily in the 1990s, critics contend the company used monopolistic business practices and anti-competitive strategies including refusal to deal and tying, put unreasonable restrictions in the use of its software, and used misrepresentative marketing tactics; both the U.S. Department of Justice and European Commission found the company in violation of antitrust laws.
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