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Level 4 overview

Level 4: Custom instrumentation

What you learned in Module 4:

  • Transaction insights let you debug specific requests.
  • Distributed tracing shows the full request path across services.
  • Continuous profiling reveals code-level performance hotspots.
  • Frontend observability captures real user experiences.

What you’ll do in this module:

You’ll explore custom application observability:

  • Why Level 4 — When auto-instrumentation isn’t enough
  • What Level 4 provides — Custom metrics, spans, and application context
  • Where to learn more — Resources for custom instrumentation

Estimated time: 5 minutes

Script

You’ve learned how to zoom from service health to individual transaction performance. That’s powerful debugging capability.

Now let’s reach Level 4: Custom Instrumentation. This is where you go beyond what auto-instrumentation can see. In this module, you’ll learn why custom instrumentation matters, what it enables, and where to learn more.

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