Since this is a relatively new offering, we currently do support exactly what @scottalanmiller referred to. Within the instance, file versioning exists as the method of backup.
At the instance level, it is currently replicated between two of our datacenters, but snapshots are not yet taken. When we do our 2.0 release, we hope to have this available. (snapshots would protect against ransomware in the same way the SIRIS would)