01.08 Configure domain and subdomains

When your applications/services go to production, you’ll need to have a domain in which you’re deploying the application. You configure this with a domain registrar and a domain name service. With AWS, you can do this with the Route 53 automated DNS and your domain registrar.
http://kb.mediatemple.net/questions/1897/How+do+I+add+a+domain+or+subdomain+to+my+server%3F
Media Template - Add Domain