Microsoft is the largest vendor of computer software in the world. It is also a leading provider of cloud computing services, video games, computer and gaming hardware, search and other online services. Microsoft's corporate headquarters is located in Redmond, Wash., and it has offices in more than 60 countries.As a leading developer of personal-computer software systems and applications, Microsoft also publishes books and multimedia titles, produces its own line of hybrid tablet computers, offers e-mail services, and sells electronic game systems and computer peripherals.