After reading the above requirements, the main purpose of purchasing services is to deploy mobile Internet-oriented applications, which we can understand as Internet-oriented and public-oriented applications. For this kind of applications, I personally suggest to choose a cloud server for the following reasons: 1. Cloud computing has matured: it has been more than 15 years since it appeared, and it has developed in China for more than 10 years. The whole cloud computing technology has matured, and its characteristics of security, stability and convenience are becoming more and more. 2. Convenient operation and maintenance: the subject is in the school. I believe that the school has a very standard computer room environment, but the server operation and maintenance will also bring a lot of extra work, such as installing systems, deploying applications, replacing disks, etc., while the cloud server only needs to deploy applications, without preparing a standard computer room, without installing an operating system, and without replacing disks;

So how to choose a cloud platform?

3. High data security: physical server data is stored on disks, which are usually raid-based, but considering the larger space requirements, disks are usually raid5, and only system disks are RAID-based, but disks have a life cycle, and basically there will be bad tracks or something in two or three years. If there are too many bad disks at one time, it is very likely to cause data loss; The cloud server does not have to worry about the underlying hardware problems at all. The unique triple backup and master -slave mechanism can effectively guarantee data security. 4. Convenient expansion: Internet-oriented applications may attract huge traffic because of a certain explosion point. In this case, traditional servers can't expand their bandwidth or computing resources in a short time, and the result is that the applications are hung up, while cloud services can quickly expand their capacity or configure automatic expansion strategies to realize automatic expansion of resources. 5. Cheap price: The traditional physical server usually uses about 10% of the resources in the low business hours, but considering the demand in the peak period, it cannot be bought too small, resulting in a waste of resources; Because the cloud server is easy to expand, it can be configured and selected according to the use demand of a single period of time, and there is no need to worry about insufficient resources, and there is no need to invest in computer room construction, so the overall cost is lower.