Practice : Telemetry-Driven Observability Reviews

Purpose and Strategic Importance

Telemetry-Driven Observability Reviews empower teams to deeply understand how their systems behave in production, uncover hidden risks, and reduce mean time to detect (MTTD) and mean time to recover (MTTR) from incidents. By treating observability as a core feedback mechanism, teams improve resilience, reduce firefighting, and build confidence in delivering changes safely.

Without structured reviews of telemetry data, teams operate in the dark, relying on assumptions rather than evidence, increasing the likelihood of degraded service quality, slow incident response, and hidden system fragility.

Description of the Practice

  • Observability reviews focus on evaluating system metrics, logs, traces, and events to detect anomalies, patterns, or potential risks.
  • Reviews incorporate recent incidents, near misses, or production changes to contextualise system behaviour.
  • Teams identify gaps in monitoring coverage, instrumentation, or alerting effectiveness.
  • Reviews result in improvement actions such as enhanced alerts, metric refinement, or architectural adjustments.

How to Practise It (Playbook)

1. Getting Started

  • Ensure key services and platforms have basic telemetry in place (e.g. logs, metrics, traces).
  • Schedule regular (e.g. sprint-end or monthly) observability reviews with engineering and operations.
  • Review recent system behaviour, incidents, and alerts to identify blind spots.

2. Scaling and Maturing

  • Use observability tooling (e.g. Grafana, Prometheus, New Relic, OpenTelemetry) to provide unified visibility.
  • Establish alert quality metrics (e.g. false positive rate, time to detect issues).
  • Expand telemetry to cover business-critical user journeys and data pipelines.
  • Link observability gaps to platform or product improvement backlogs.

3. Team Behaviours to Encourage

  • Treat observability as a shared team responsibility, not just an operations task.
  • View telemetry as a learning tool, not a compliance requirement.
  • Celebrate proactive detection of issues before users are impacted.
  • Use reviews to build confidence in making frequent, safe changes.

4. Watch Out For…

  • Treating observability as a technical afterthought.
  • Excessive alert noise leading to alert fatigue or ignored incidents.
  • Lack of follow-up actions after reviews.
  • Overlooking system performance under real-world conditions.

5. Signals of Success

  • Teams actively engage with and improve observability tooling.
  • System health and user experience are monitored holistically.
  • Incidents are detected and resolved faster due to reliable telemetry.
  • Observability improvements are incorporated into delivery and platform work.
  • Confidence grows in the team's ability to deliver changes safely.