Microsoft owns the Windows operating system and the Xbox video-game brand.
Windows began as a graphical environment for MS-DOS and developed into Microsoft’s flagship desktop operating-system family. Its broad adoption on personal computers helped make Microsoft one of the most influential software companies in the world.
Microsoft entered the console market with the original Xbox, released in North America in 2001. The Xbox brand later expanded into online gaming through Xbox Live, first-party studios, subscription services, and consoles such as the Xbox 360, Xbox One, and Xbox Series X and S.
Windows and Xbox serve different markets but share Microsoft’s broader software and services strategy. Microsoft also owns business products such as Microsoft 365 and Azure, so its market capitalization reflects much more than consumer operating systems and games.