This is exactly how simple I want deploy configuration to be. All that's needed is the URL of the entry point. Then slightly fancier is the ability to specify a

This is exactly how simple I want deploy configuration to be. All that's needed is the URL of the entry point. Then slightly fancier is the ability to specify a Github URL which auto-updates on pushes. All previous production deployments and even pre-production branches are accessible simultaneously from their own subdomains.