Netdata is a fully-featured StatsD server, meaning it collects formatted metrics from any application that you instrumented with your library of choice. Netdata is also its own backend implementation, as it offers instant visualization and long-term storage using the embedded time-series database (TSDB). When you install Netdata, you immediately get a fully functional StatsD implementation running on port 8125.
Since StatsD uses UDP or TCP to send instrumented metrics, either across localhost or between separate nodes, you’re free to deploy your application in whatever way works best for you, and it can still connect to Netdata’s server implementation. As soon as your application exposes metrics and starts sending packets on port 8125, Netdata turns the incoming metrics into charts and visualizes them in a meaningful fashion.