SRE Maturity Models: A Five-Stage Framework to Benchmark Your Team

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Site reliability engineering (SRE) consultant Dr. Samson Tanimawo has outlined a five-stage maturity model to help teams assess their operational readiness, ranging from reactive firefighting at Stage 0 to AI-assisted, proactive incident prevention at Stage 5. Early stages are characterized by absent on-call rotations and unread alerts, while mid-level teams begin tracking SLOs, error budgets, and conducting post-mortems. Tanimawo notes that most teams he has encountered remain stuck at Stages 1 or 2, with the transition to Stage 3 being the hardest due to the sustained investment it demands without an immediate crisis to justify it. He cautions against skipping foundational steps, warning that deploying advanced tools like ML anomaly detection before basics are in place only creates more sophisticated chaos. According to Tanimawo, the hallmark of a truly mature SRE team is near-total reliability, freeing engineers to focus on meaningful, innovative work.

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