Resources – Devices (Callisto as a Service)
The Devices page gives us a view of ConfigMgr client health and inventory.

The top-row dashstats show our progress towards full management of the estate as well as a breakdown by device type.
The donut charts are filterable by collection. The first three charts show details about client versions, heartbeat discovery and incoming inventory to show you where problems may be coming. The final chart is detailed enough to warrant its own whole page Hardware - Client Computer Hardware Property - Callisto (getcallisto.io) but in brief it shows a series of hardware properties changeable with the properties icon.
All dashstats and charts are clickable. The resulting datatables are sortable and filterable and the results can be exported. Clicking any device in the datatable will open the device modal.