Xerox Corporation /ˈzɪərɒks/ is a U.S. based global corporation that sells business services and document technology products to businesses and governments of all sizes.  Xerox is headquartered in Norwalk, Connecticut (moved from Stamford, Connecticut in October 2007), though its largest population of employees is based around Rochester, New York, the area in which the company was founded. On September 28, 2009, Xerox announced the intended acquisition of Affiliated Computer Services for $6.4 billion. The deal closed on February 8, 2010. As a large developed company, it is consistently placed in the list of Fortune 500 companies.