Using WHM Backup/Restore with AWS S3
AWS S3 storage is a inexpensive and reliable way to create off-site backups for your server. Once configured WHM/CPanel and S3 is fully automated for the backup processing, restoring does mean manually copying the backup back to your server.
Please refer to 'Using WHM Backup/Restore' for general setup. It is best if you have this process complete so that only the S3 setup needs to be added.