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| Criterion |  Operations After-Action Review |  Operations Failure Mode and Effects Analysis |  Operations Root Cause Tree Analysis |
|---|---|---|---|
Purposedifferent | 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. | 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. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitydifferent | Low | High | Medium |
Timedifferent | 20-45 min | 2-6 h | 1-3 h |
Participantsdifferent | 3-12 | 3-10 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Lessons learned, Action items, Event summary | FMEA Table, Risk Priority, Mitigation Actions | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | LearningOperationsImprovement | RiskQualityOperationsRoot cause | Root causeTreeIncidentQuality |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
