origin
Parameters
value
The host header value (an IPv4 address, IPv6 address or Domain name) which is sent to the origin with each request. If unspecified the hostname from the request will be used.
Azure Front Door Origins, such as Web Apps, Blob Storage, and Cloud Services require this host header value to match the origin's hostname. This field's value overrides the host header defined in the Front Door Endpoint. For more information on how to properly set the origin host header value please see the product documentation.