Yahoo! Inc. is an American public corporation headquartered in Sunnyvale, California, , that provides Internet services worldwide. The company is perhaps best known for its web portal, search engine , Yahoo! Directory, Yahoo! Mail, Yahoo! News, advertising, online mapping , video sharing , and social media websites and services. As of January, 2010, Yahoo held the world's largest market share in online display advertising. JP Morgan put the company’s US market share for display ads at 17%, well ahead of No. 2 Microsoft at 11% and AOL at 7%. Yahoo! was founded by Jerry Yang and David... Filo in January 1994 and was incorporated on March 1, 1995. On January 13, 2009, Yahoo! appointed Carol Bartz, former executive chairperson of Autodesk, as its new chief executive officer and a member of the board of directors. On January 1994, were Electrical Engineering graduate students at Stanford University. In April 1994, "Jerry and David's Guide to the World Wide Web" was renamed "Yahoo!", for which the official backronym is "Yet Another Hierarchical Officious Oracle".
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