Amazon S3 is a great way to host files. It is similar to Google Drive, Apple iCloud, and Microsoft OneDrive, but for developers. Files are uploaded into Buckets under specific Keys. They can then be downloaded from around the world. There is a little bit more to it, but that is the main gist.

There are plenty of options to host static websites. An obvious one would be GitHub pages. This can deploy pages found in a directory, or found in a branch. It is great if you have a public resource to publish, but it can’t handle private ones. For those cases, I would recommend AWS S3.