What is Postmortem?
A structured document written after an incident to understand what happened and prevent recurrence.
A postmortem (or incident review) is a blameless document written after a production incident. It captures: incident timeline, root cause analysis (5 Whys), impact (users affected, duration), what went well, what went wrong, and action items to prevent recurrence. Blameless postmortems focus on systemic issues, not individual blame, creating a culture of learning from failures. Google's SRE Book popularized this practice, and it's now standard in high-performing engineering teams.
Deep Dive Guide
dora metrics will define devops teams
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Deliberately injecting failures into a system to discover weaknesses before they cause incidents.
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A culture and practice combining software development and IT operations for faster, reliable delivery.
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An operation that produces the same result no matter how many times it's executed.
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