Home Box Office, Inc. (HBO) is an American multinational media and entertainment company operating as a unit of Warner Bros. Discovery. Founded by Charles Dolan and based out of WarnerMedia's former corporate headquarters at the 30 Hudson Yards complex in the West Side of Manhattan, its main properties include its namesake pay television network Home Box Office (HBO), sister service Cinemax, HBO Films, and the former HBO Go streaming service. (A secondary HBO-branded service, Max, is operated under sister subsidiary Warner Bros. Discovery Global Streaming and Interactive Entertainment, which shares principal management with Home Box Office, Inc.) It has also licensed or maintained ownership interests in international versions of HBO and Cinemax, most of which are managed by Home Box Office, Inc. through sister division Warner Bros. Discovery International.