In order to better retain customers, Alibaba Cloud Server has introduced the benefit that the longer you buy, the greater the discount. For example, 15% off for one year and 55% off for three years. In addition, during various AliCloud activities, the preferential price is greater than the previous discount, which can reach a discount of 0.9%. The following Weieis notes share the advantages and disadvantages of Alibaba Cloud servers purchased for three years at a time