Given that Discourse supports any S3-compatible storage provider, it would probably be more accurate if the “Amazon” from “Amazon S3” in the wording of the backup widget on the admin dashboard were dropped.
Screen Shot 2019-01-12 at 03.14.40.png
(Of course, it would also be accurate to detect which storage provider is being used, but just dropping “Amazon” seems the simpler [and perfectly reasonable] course.)