Activision Blizzard, Inc. is a US electronic game developer and publisher jointly controlled by Vivendi Games and Activision. The company operates through several business segments: Activision, Blizzard, and King. The Activision segment develops and releases interactive software products and entertainment content, especially for console platforms. The Blizzard segment specializes in developing and releasing interactive software products and entertainment content, especially for PC platforms. The King segment develops and releases interactive entertainment content and services, especially on mobile platforms such as Google's Android and Apple's iOS. The company was founded in 1979 and is headquartered in Santa Monica, California.