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| Criterion |  Operations After-Action Review |  Architecture arc42 |  Operations Failure Mode and Effects 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | 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. |
Complexitydifferent | Low | Low | High |
Timedifferent | 20-45 min | 1-2 Tage | 2-6 h |
Participantsdifferent | 3-12 | 1-4 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Lessons learned, Action items, Event summary | Architecture Document, Context View, Runtime View, Deployment View | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | LearningOperationsImprovement | ArchitectureDocumentationCommunication | RiskQualityOperationsRoot cause |
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