This has nothing to do with whether it is a Alibaba Cloud server.

After logging in to WeChat public platform official website, click "Modify Configuration" on the public platform background management page-developer center page, and fill in the server address (URL), Token and EncodingAESKey, where URL is the interface URL used by developers to receive WeChat messages and events. Tokens can be filled in by developers at will and used to generate signatures (tokens will be compared with those contained in the interface URL to verify security). EncodingAESKey is manually filled in or randomly generated by the developer and will be used as the encryption and decryption key of the message body.