A post-incident review (also called post-mortem or incident retrospective) is a structured analysis conducted after resolving an incident to understand root cause, document learnings, and prevent recurrence. Effective post-mortems use a blameless approach focusing on systems and processes, not individuals, creating psychological safety for honest discussion. The process includes: (1) Timeline reconstruction showing what happened, when, and what actions were taken, (2) Root cause analysis using Five Whys, Fishbone diagrams, or fault tree analysis to identify underlying system issues, (3) Impact assessment quantifying downtime, affected users, and revenue impact, (4) Action item identification with specific preventive measures, assigned owners, and deadlines, and (5) Follow-up verification ensuring action items are completed. Organizations conducting regular post-mortems reduce repeat incidents by 50-70% through systematic improvement. We facilitate post-mortem culture, provide templates, train your team on facilitation techniques, and track action items to completion. Many clients find post-mortems become their most valuable learning tool, turning costly incidents into organizational knowledge.