The SAM template deploys an Amazon API Gateway Edge Custom Domain Name.

The Edge Custom Domain Name is mapped to a Stage in an existing API Gateway. Additionally, a Route53 A record is created to map the Edge Custom Domain Name (i.e. example.com) to the Target Domain Name created by API Gateway (i.e. d-abcde12345.execute-api.ap-southeast-2.amazonaws.com).

As prerequisites for this pattern, you must have:

* A valid certificate in ACM (Amazon Certificate Manager) in the us-east-1 Region that covers the namespace of the domain you would like to use (i.e. *.mydomain.com).

* A public Hosted Zone in Route 53 with the domain name you would like to use (i.e. mydomain.com).

* An API Gateway API (REST, HTTP or Websockets) and a deployed Stage within this API.