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| Criterion |  Decision Making Risk Matrix |  DevOps Blameless Postmortem |  Operations Learning Review |  Operations After-Action Review |
|---|---|---|---|---|
Purposedifferent | When a project faces many possible disruptions, it quickly becomes unclear which risks deserve attention first. It separates options, evaluation criteria, and open risks. The result is captured as a Risk Matrix and a Top Risk List. | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 30-60 min | 30-90 min | 1-3 h | 20-45 min |
Participantsdifferent | 3-10 | 3-12 | 3-10 | 3-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Risk Matrix, Top Risk List | Postmortem Doc, Action Items, Timeline | Learning Review Notes, System Factors, Improvement Actions | Lessons learned, Action items, Event summary |
Tagsno overlap | RiskDecisionPrioritizationAssessment | Site Reliability EngineeringIncidentLearningReliability | LearningRetrospectiveIncidentOperations | LearningOperationsImprovement |