No, you don’t need an Amazon S3 account to back up your repositories.
Backup sync to Amazon S3 is optional. It is an additional copy to the cloud backup available for you at BackHub.
Keeping an additional copy of your backups is handy if you want to:
- easily access or download all repository backups and metadata at once
- access your backups anytime, even if GitHub or BackHub were to be unavailable
- extend the backup retention beyond the 30 days covered by backup snapshots
- further process your data