The original title is "Building a Culture of Reliability: Beyond the SRE Handbook"

Short summary

A five-level reliability maturity model arguing that reliability is a cultural outcome, not a headcount metric. The post outlines ownership models between dev and SRE teams, prescribes a 20% engineering time allocation for reliability work, and provides concrete cultural metrics and a six-week roadmap to move from reactive to proactive reliability. Most companies sit at Level 1-2; the biggest jump is reaching Level 3.

• •Five-level reliability maturity model from Reactive to Systemic — most companies are stuck at Level 1-2
• •Reliability is everyone's job: dev teams own SLOs and on-call, SRE builds infrastructure and consults
• •20% engineering time should be protected for reliability work with concrete cultural metrics to track progress

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