Github is great to track changes, roll back mistakes, and collaborate when changing files. Amazon Web Services is a great way to host a web site without having to maintain servers. Learn how to combine the two to have a fast, cheap website that is easy to update. Push something to Github, and watch it publish to a Tech Services Amazon Web Service S3 instance and invalidate the cache, all automated. See it work with a standard CDN instance, or something more complicated like a static-site generator.