21Vianet Group, Inc. engages in the provision of carrier-neutral internet data center services. The company also provides hosting and related services; managed network services; cloud infrastructure services; and content delivery network services. The hosting and related services include managed hosting services, interconnectivity services, and value-added services. The managed network services included hosting area network services and BroadEx route optimization. The cloud infrastructure services allow businesses to run their applications over the internet rather than having an information technology infrastructure. The content delivery network services offer solutions to their data connection needs. The company was founded by Sheng Chen and Jun Zhang in 1999 and is headquartered in Beijing, China.