IDC This link opens in a new windowInternational Data Corporation (IDC) provides market intelligence, advisory services, and current commentary on the information technology, telecommunications, and consumer technology markets. The IDC database contains market forecasts, industry analyses, case studies, vendor decision toolkits, and blog posts from over 1,000 IDC expert analysts. IDC’s scope is global in nature and features information on major multinational technology companies. IDC also offers decision making strategies for both technology suppliers and technology buyers.