Huawei Cloud Service provides users with cloud computing IT infrastructure services through a browser-based cloud management platform and online self-service on the Internet. The biggest advantage of cloud computing is that IT infrastructure resources can flexibly expand and contract with the actual changes of users' business. Users can use as many resources as they need and pay according to the usage. Through this flexible computing power and on-demand billing method, users can effectively reduce the operation and maintenance costs. In the traditional mode, enterprises need to estimate the business volume before going online. However, this prediction is often difficult to be accurate. When the business goes online, there will be too many or insufficient resource estimates, which will affect the normal operation of the business. This is also the confusion faced by most enterprises, and the emergence of elastic cloud computing can just help enterprises solve this problem. With cloud computing, enterprises no longer need to estimate and pay a lot of money in advance to uncertain IT infrastructure resources. Instead, enterprises can open hundreds of cloud computing resources in a few minutes, and they can also quickly reduce resources at any time, so that resources can be allocated effectively and flexibly.