If you want to customize the domain name of the server to which Alibaba Cloud CDN initiates back-to-origin requests, you must first configure the domain type of the origin host. The origin host supports the following domain name types: accelerated domain name, origin domain name, and custom domain name.
Background information
An origin host is the domain name of the origin server to which Alibaba Cloud CDN initiates back-to-origin requests. If the origin server is shared by multiple content delivery services, each back-to-origin request can include a different origin host to specify the required content delivery service.
- An origin server defines a specific IP address to which back-to-origin requests are redirected.
- An origin host defines a specific site that is hosted on a specific IP address. Back-to-origin requests are redirected to the IP address.