Advantages

AS offers the following advantages for your application system:

• Automatic resource adjustment

  AS adds instances for your application system when the access volume increases and reduces extra resources from the system when the access volume drops, ensuring stable system running.

• Enhanced cost management

  AS enables you to use instances on demand by automatically adjusting resources in the system, thus eliminating waste of resources and reducing costs for you.

• Improved availability

  AS ensures that the application system consistently has a proper resource capacity to comply with access volume requirements. Working with Elastic Load Balance (ELB), AS will automatically associate the instances newly added to an AS group with a load balancing listener. In this way, ELB evenly distributes the access traffic to all instances in the AS group through the listener.

• High error tolerance

  AS monitors instance status in the application system. After detecting an unhealthy instance, AS replaces it with a new one.