Summary of the development of cloud computingSince cloud computing was proposed in 2006, it has roughly experienced the formation stage, development stage and application stage. The past decade has been a decade of rapid progress in cloud computing, and the global cloud computing market has grown several times. At present, the global cloud computing market maintains a steady growth trend. In 2019, the global cloud computing market represented by IaaS, PaaS and SaaS reached 188.3 billion, a gr...