Microsoft is being investigated by the Federal Trade Commission in a wide-ranging antitrust probe, making it the fifth Big Tech company to fall under such scrutiny in several years. The demand for information that spans hundreds of pages and culminates over a year of informal discussions with Microsoft competitors and partners.

The U.S. Federal Trade Commission has opened a broad antitrust investigation into Microsoft , including of its software licensing and cloud computing businesses, a source familiar with the matter said on Wednesday.

The FTC has launched an antitrust investigation into Microsoft, according to multiple reports — corroborating earlier reporting by the Financial Times.