This should be incredibly obvious, but I can't seem to work out how to do it.
I have an EC2 instance running. I can see the 'Public DNS' (hostname) of my instance.
I have set up a Route 53 'hosted zone' for my domain, and changed the name servers with the registrar.
But how (using the AWS Management Console) do I actually link them, so my domain maps to my instance?
You create an A record to the Elastic IP that is (should be!) attached to your instance.
If you're using an Elastic Load Balancer, you create an ALIAS record to it instead.