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Glossary term

Blameless culture

A blameless culture is essential. Postmortems focus on systems and processes, not individual actions. "Bob ran the cleanup script wrong" is bad; "the cleanup script didn't surface its own failures" is good. The system that allowed Bob to make the mistake is what needs fixing.

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T4 / M4.5 / L4 Postmortems for cost incidents

Start with the bill.

Foundations takes about five hours. The first lesson is nine minutes.

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