Microsoft Windows (or simply Windows) is a metafamily of graphical operating systems developed, marketed, and sold by microsoft. It consists of several families of operating systems, each of which cater to a certain sector of the computing industry with the os typically associated with IBM PC compatible architecture. Active Windows families include windows NT, windows Embedded and windows phone; these may encompass subfamilies, e.g. windows Embedded compact (Windows CE) or windows server. Defunct Windows families include windows 9x; windows 10 mobile is an active product, unrelated to the defunct family windows mobile.