What is the use of cloud function in the development of WeChat applet cloud?

Developers can use the cloud to develop WeChat applets and games without building a server. (To put it bluntly, the cloud is the server. Tall enough to be unfriendly to novice friends. )

Applet cloud development provides three basic capabilities: database, storage and cloud function.

Database: json database, which means json is stored in it and taken out.

Storage: just store your pictures, audio and video files in it, help you generate links and use them directly, just like a network disk.

Cloud function: This cloud function is the interface of the server. When you call this function, it is also the calling interface. Cloud functions can be written in the client or in the cloud development console. When you're done, synchronize them. You have both ends. In the cloud function, you can calculate or operate the database and return the desired results to the client synchronously or asynchronously.

Ordinary development is different. Ordinary development needs to prepare all the above conditions. So cloud development is more convenient and efficient than ordinary development.