Sam360 is agent based. And agent free. In fact Sam360 can gather data in 5 different ways…
Deploy Sam360 Agent to collect data from local devices
Remotely scan devices using Sam360 Management Point
Use zero install, zero config web scan tool for one off scans
Import data from SCCM, MAP Toolkit, Snow Inventory, Lansweeper & other 3rd party tools
Manually input data in to portal