AZ-204 — Application observability
Route position
This path closes the AZ-204 application loop. It follows runtime, data, identity, and integration and teaches how an application exposes evidence for diagnosis and availability decisions.
Ordered modules
Core mental model
Instrumentation emits telemetry; collection stores it; queries interpret it; alert rules evaluate signals; action groups route a response. Metrics summarize numeric behavior, logs preserve structured records, and traces connect a request across components. None of these proves the workload is healthy unless the signal measures a meaningful user or service outcome.
Checkpoint
Given a failed API request, identify whether metrics, logs, or traces provide the fastest evidence; trace the signal into an alert rule and action group; and explain how an availability test differs from internal application telemetry.
Sources and re-audit
- AZ-204 monitoring objectives, skills measured 2026-01-14; checked 2026-08-31.
- Azure Monitor overview, checked 2026-08-31.
Re-audit when telemetry, query, availability-test, or alert behavior changes.