International Data Corporation (IDC), an American market research, analysis and advisory firm, specialises in information technology, telecommunications, and consumer technology, Software Development. A wholly owned subsidiary of the International Data Group (IDG). IDC has its headquarters in Framingham, Massachusetts, United States (U.S.). The corporation has approximately 70 offices grouped into Latin America, Middle East and Africa, Central and Eastern Europe, Europe, Asia/Pacific and the U.S.. It employs over 1,100 analysts, who provide consultancy in relation to technology opportunities and trends for over 110 countries.


IDC was founded by Patrick Joseph McGovern in Massachusetts in 1964. At the outset, the company produced a computer installation data base and published a newsletter, "EDP Industry and Market Report". Companies like Univac, Xerox and Burroughs paid IDC for the research. After three years, an expanding IDC was grossing US$600,000.[2]

McGovern became engaged by the concept of publishing, after IDC research showed a lack of knowledge among computer systems managers of computer industry news and product developments. He consequently launched Computerworld in 1967, which was a continuation of the monthly newsletter, published weekly instead of monthly, in a different format, with advertising, which became a cornerstone of IDG's subsequent publishing arm.[2]

IDC has had major slips in forecasts. In 2011, IDC predicted Windows Phone to overtake iPhone in market share, but in reality Windows Phone is almost dead.[3]