`ECS Elastic Computing Service

A cloud server (Elastic Compute Service, ECS for short) is a simple and efficient computing service with elastically scalable processing capabilities. It can quickly build more stable and secure applications, improve operation and maintenance efficiency, and reduce IT costs. 

The functions of the cloud server ecs are as follows: 
1. Full management authority: has full control over the operating system
 of the cloud server , and users can self-solve system problems and perform various operations by connecting to the management terminal; 2. Snapshot backup and recovery: to the cloud server Snapshots are generated for disk data, and users can use snapshots to roll back and restore previous disk data to enhance data security; 3. Custom image: For cloud servers with installed application software packages, support for customized images and data disk snapshots to create servers in batches, simplifying User management and deployment; 4. Have API interface : use ECS API call management, and set access to one or more cloud servers through the security group function, making development and use more convenient.