This topic describes the request structure used when you call API operations of Auto Scaling (ESS).


To reduce network latency, we recommend that you configure endpoints based on your business location. The following table describes the ESS endpoints.
Region Public endpoint VPC endpoint
Default None
China (Qingdao)
China (Beijing)
China (Zhangjiakou-Beijing Winter Olympics)
China (Hohhot)
China (Ulanqab)
China (Hangzhou)
China (Shanghai)
China (Shenzhen)
China (Heyuan)
China (Chengdu)
China (Hong Kong)
Australia (Sydney)
Malaysia (Kuala Lumpur)
Indonesia (Jakarta)
Japan (Tokyo)
UK (London)
US (Silicon Valley)
US (Virginia)
Germany (Frankfurt)
UAE (Dubai)
India (Mumbai)


You can send requests over HTTP or HTTPS. For a higher level of security, we recommend that you send requests over HTTPS.


You can send requests by using the HTTP GET method. In an HTTP GET request, the request parameters must be included in the request URL.


For each request, you must specify the operation that you want to perform, such as CreateScalingGroup. Additionally, each request must contain the common request parameters and operation-specific request parameters.


All requests and responses are encoded in UTF-8.