Types of instances in Cloud computing how do they work Alibaba/Aliyun Cloud

We called it as Instance lifecycle management

There are two types of ECS instances: 1)automatically created 2)manually added instances.

Automatically created ECS instances

Automatically created ECS instances are automatically created according to scaling configuration and rules.
Auto Scaling manages the lifecycle of this ECS instance type. It creates ECS instances during scale-up and stops and releases them during scale-down.

Manually added ECS instances
Manually added ECS instances are manually attached to a scaling group.
Auto Scaling does not manage the lifecycle of this ECS instance type. When this ECS instance is removed from a scaling group, either manually or as the result of a scaling-down activity, Auto Scaling does not stop or release the instance.