Basically backing up to s3 etc with files being encrypted before uploading.
Currently Remotely save offers encryption before uploading to webdav etc,but since it seems to be abandoned as there are are so many open issues on github,with no replies from the main dev i propose another plugin that is a fork of remotely save with the issues fixed. Iti s currently in a broken state where obisidian freezes/stops working both on android and desktop(windows/mac) if the plugin tries to upload video/mp4 files to the cloud storage.