I published a post yesterday over on Cloud Storage Buzz listing 10 ways to backup your website to the cloud. There are a lot of services out there that can help you protect your website and while many of the services I mentioned at Cloud Storage Buzz will help you keep a regular backup of your website I wanted to give you the TL:DR version here.
CodeGuard If you just want an automated backup of your website files and databases these service is great. They are like the Backblaze of website backup, not only is the backup setup easy but more importantly restoring your website is easy.
Sucuri Fantastic service and the only one I recommend if you need malware clean up on your website. They do a great job.
VaultPress If you only use WordPress for your website and want to make absolutely sure it is backed up, get Vaultpress. That is all you need to know.
Go backup your website!