Steam is a digital distribution service and storefront for video games, operated by Valve Corporation. Initially launched as a software client in September 2003 to facilitate automatic game updates for Valve's titles, it later expanded to include third-party games in late 2005. Steam provides a range of features, including game server matchmaking supported by Valve Anti-Cheat measures, social networking capabilities, and game streaming services. The functionalities of the Steam client encompass automated game updates, cloud storage for preserving game progress, and community features such as direct messaging, in-game overlay options, and a marketplace for virtual collectibles.
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