A Client Management License (ML) covers client-side licensing requirements for the two products governed under the Management Servers License Model, System Center and Advanced Threat Analytics (ATA); available Per-User, Per-OSE, or Per-Device.

Server Management Licenses (ML) provide the right for server OS-based workloads running on a physical server to be managed by one or more System Center components; starting Oct. 2016, Server MLs are Per-Core.

A license model exclusive to System Center products (and Advanced Threat Analytics) that requires managed servers and clients to be licensed with Server MLs (Management Licenses) and Client MLs respectively.