The largest business software provider for desktop PCs and laptops, and the only major operating system provider apart from Apple, they created Windows, Microsoft Office (which includes Word, Excel, Access and Powerpoint), Internet Explorer, Outlook and many other widely used programs. They are belatedly moving into the tablet and phone markets too, but they are way behind in these markets, and their first attempt to create a unified Windows for all devices, Windows 8, was a bit of a disaster.
The public multinational corporation that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing.