21Vianet

VNET Group, Inc. (VNET, formerly 21Vianet) is the largest private, carrier-neutral Internet and data center service provider in China. A Cayman Islands holding company, VNET provides value-added telecommunications services in China through four domestic PRC companies: VNET Technology, BJ iJoy, WiFire Network, and SH Zhiyan.^[2] It is the exclusive operator of Microsoft Azure and Microsoft 365 services in China, and also houses data centers for Alibaba and other Chinese companies.^{[1][3][4][5][6]}