Fortinet Management Theory : Inside the FortiManager system : Inside the FortiManager management module : ADOM layer
 
ADOM layer
The ADOM layer is where the FortiManager manages individual devices or groups of devices. It is inside this layer where policy tables and folders are created and managed and installed on managed devices. Multiple policy packages can be created here, and they can easily be copied to other ADOMs to facilitate configuration or provisioning of new devices on the network. The ADOM layer contains one common object database per ADOM, which contains information such as addresses, services, IPS information, AV definitions, and Web Filtering and email filtering.