The Cloud...
However, let those who have never skipped a backup throw the first stone. Or, um, fling the malware into the data centre.
Beautiful.
But I digress. "The Cloud" is just another word for another man's purdy compootah. And it is up to you to ensure that backups are made.
Unless it is written into the contract, treat the case as if no backups exists, and you need to make these.