Vnet started as AsiaCloud in 1999, subsequently it moved to the data center business with its first self-developed data center opening in 2010. The company listed (as 21Vianet) on the Nasdaq in April 2011, subsequently changing its name to Vnet Group in 2021. It originally focused on providing data center services such as colocation and cloud services to retail clients in China but added hyperscale customers in 2019 and now counts large Chinese hyperscalers such as Alibaba Cloud, Tencent Cloud, Huawei Cloud and JD Cloud as customers. At the end of December 2021 it had 78,540 self-built cabinets with the majority in Beijing, Shanghai, and the Greater Bay area.