OnCommand System Manager Applitacion

In OnCommand System Manager in my FAS I have an option to create Application.I have ontap 9.5 installed.

I have several database options (Oracle, SQL, mongo, etc) and also hyper-v / vmware, in my case I generated a 1GB sql application to do a test, this generated several vol and luns, the connection in thewizard was by SAN where I had to select the iqn from one of my servers (Windows + SQL Server 2012 + Snapdrive + Snapmanager for SQL)
But on that server did not appear the new database connected in SQL nor new disks (snapdrive).

I ask, is FAS itself now a database engine?

Does anyone have any document that explains how to use that option, or what advantages does it have?