An API group is a management unit of APIs, and needs to be created before creating an API.
An API group has a corresponding region. Once an API group is selected, the region is determined and cannot be changed.
A unique second-level domain name is bound to the created group. You can access the second-level domain name to call APIs under test in the group.
To enable an API, you must bind an independent domain name to the group. The independent domain name needs to be filed on the Alibaba Cloud system, and its CNAME is resolved to the group’s second-level domain name. You can access the independent domain name to call online APIs in the group.
If your API supports the HTTPS protocol, you must upload the SSL certificate of the independent domain name.