Snapshots
Snapshots are a complete copy of the embedded database at a specific time. Snapshots are files that the Roaming Database package uploads to (and downloads from) cloud storage. The Roaming Database service only uploads snapshots if you use the StorageLocation.Remote
storage option.
Snapshots are identified by versions, which are specific snapshots of a roaming database within an ordered series. The Roaming Database service stores versions in cloud storage for later access.