Tools / Datadog Interview questions
What is Network Performance Monitoring in Datadog?
Network Performance Monitoring (NPM) shows network traffic between hosts, containers, and services - connections, throughput, retransmits, and latency - tagged the same way as the rest of your Datadog data, so you can see which service-to-service connection is actually degraded.
It's collected using an eBPF-based System Probe bundled with the Agent, which observes TCP connection behavior at the kernel level without requiring any change to application code.
This complements host-level infrastructure metrics by answering a different question: not just 'is this host healthy' but 'is the network path between these two specific services healthy.'
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