The Device Topology Map in Datadog Network Device Monitoring (NDM) provides clear visibility into network device relationships and dependencies, enabling engineers to quickly troubleshoot issues by visualizing the topology of their on-premises network infrastructure at a glance. By displaying connections between all devices using Link Layer Discovery Protocol (LLDP) and Cisco Discovery Protocol (CDP), the map reduces mean time to resolution (MTTR) by pinpointing problematic devices. The device map also allows engineers to easily group devices by tags, assess network health based on characteristics such as data center or location, and visually identify device types using icons. With features like hover-over panels and customizable color rules, engineers can quickly dig deeper into issues and track performance and hardware metrics over time. By providing actionable data and context, the Device Topology Map helps teams start troubleshooting immediately, making it easier to identify and resolve network issues.