As someone who is currently hosting a static site with S3 + CloudFront, I'd be interested to hear more about this. Were you hosting something more heavyweight than mostly text?

Make sure that you've set the correct cache control headers on the S3 objects. So "Max age" should be something far future for static assets and something near future for HTML files.

If you forget that then Cloudfront will retrieve the objects from S3 every time there is any activity on your site and your bill will go up really fast.

Any devs out there with a Visual Studio/MSDN as subscription should also be aware of their free Azure credit. I get 50$/Mo, which is more than enough to host a static site with CDN (my blog typically runs at around 1-2$).

If you regularly serve bigger files but have low traffic DigitalOcean S3 Spaces and a custom Cloudflare Workers CDN might be an interesting solution for you. Cloudflare Workers are based only on requests and priced at 5$/10M and if you cache everything heavily DO’s 5$ S3 plan should be enough for most use cases. (I’m not affiliated with either company)