This seems so much more work than [Netlify](https://netlify.com). Coupled with Netlify CMS it even gives you a nice interface to work with.
I’ve been meaning to try out Netlify! At first glance it definitely looks like a good fit for these types of one-offs. Seems like the free plan goes a long way too, unless you want more than one contributor on an account.
Follow up with alternate cloud solutions in "Even quicker dirty static sites."
I like using App Engine for simple static sites like this. For simple stuff like this I've never actually hit the point where I have to pay. SSL is pretty easy to set up, you can slap a domain on it or use the default appspot domain provided. The versioning is a nice addition that makes it easy to stage changes without pushing them live right away.
I haven’t had a chance to mess around with App Engine. Google Cloud is solid in general, so I’m sure it’s as good as you say. Might need to do a follow up with comparisons :)
I would definitely use GitHub Pages rather than S3 unless I planned for the site and its assets to significantly expand down the line.
Ahh, GitHub pages is another viable option. Especially if you’re already keeping the source in a GitHub repo.