tianyiyun is a cloud computing brand owned by China telecom. it was registered by China telecom in 216 and used as the trademark of China telecom cloud computing branch. it is a cloud computing service provider owned by China telecom. In 216, Tianyiyun released Tianyiyun 3., which comprehensively upgraded technology, improved service quality and innovated business products, enhanced the core competitiveness of Tianyiyun and met the needs of cloud computing in various industries.