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| Criterion |  DevOps Blameless Postmortem |  Facilitation Dot Estimation |  Operations Failure Mode and Effects Analysis |  Operations Learning Review |
|---|---|---|---|---|
Purposedifferent | 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. | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | 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. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 30-90 min | 5-20 min | 2-6 h | 1-3 h |
Participantsdifferent | 3-12 | 3-20 | 3-10 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Effort Heatmap, Risk Signals, Discussion Targets | FMEA Table, Risk Priority, Mitigation Actions | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | EstimationEffortRisk | RiskQualityOperationsRoot cause | LearningRetrospectiveIncidentOperations |