This document discusses co-management between Microsoft Intune and System Center Configuration Manager (SCCM). Co-management allows devices to be managed by both Intune and SCCM at the same time. The document outlines the prerequisites, architecture, and configuration needed to set up a Cloud Management Gateway (CMG) and Cloud Distribution Point (CDP) to enable co-management. It also describes several co-management scenarios and benefits such as the ability to manage both Azure AD joined and on-premises devices from SCCM.