You can keep a local Borg repository (https://www.borgbackup.org https://www.borgbackup.org) and copy it anywhere in the cloud with something like https://rclon

You can keep a local Borg repository (https://www.borgbackup.org https://www.borgbackup.org) and copy it anywhere in the cloud with something like https://rclone.org https://rclone.org. To quote the website, BorgBackup gives you: - Space efficient storage of backups. - Secure, authenticated encryption. The encryption is performed on your machine, and you don't need any special features from the provider(s) beyond simply storing a lot of small chunks.