Looks very similar to my project https://github.com/kkuchta/scarr from a while back. It even uses the same acronym (I assume that's just a coincidence, since we both just picked a cool-sounding english-language word using the initials from S3, Cloudfront, ACM, and ACM.

At a glance: - Mine handles domain registration + ACM verification automatically - This one wisely uses clioudformation instead of api calls - This one does apex->ww redirects, whereas mine uses the apex and has no redirect

Seems pretty cool!