Backup & migrate module comes with built-in support for Amazon Web Services Simple Storage Service (AWS S3).
Putting your backups entirely offsite is probably one of the best things you can do for yourself and your clients. Making' local' backups is OK for development, but really doesn't help for disaster recovery of live websites.
You must have an AWS account set up first! Once you have that, and can log in to the AWS 'console' OK, we can proceed.