Custom instrumentation allows programmatic creation, modification, or deletion of traces to send to Datadog. This is useful for tracing in-house code not captured by automatic instrumentation, removing unwanted spans from traces, as well as for providing deeper visibility and context into spans, including adding any desired span tags.
Before instrumenting your application, review Datadog’s APM Terminology and familiarize yourself with the core concepts of Datadog APM.
If you’re already using OpenTracing or OpenTelemetry, see OpenTracing and OpenTelemetry.
Additional helpful documentation, links, and articles: