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| Criterion |  Operations Learning Review |  Architecture Architecture Decision Record |  Operations After-Action Review |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | 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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 1-3 h | 15-45 min | 20-45 min | 1-2 Tage |
Participantsdifferent | 3-10 | 1-3 | 3-12 | 1-4 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop + async |
Outputdifferent | Learning Review Notes, System Factors, Improvement Actions | ADR File, Decision Log, Rationale | Lessons learned, Action items, Event summary | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | LearningRetrospectiveIncidentOperations | ArchitectureRationaleDocumentationGovernance | LearningOperationsImprovement | ArchitectureDocumentationCommunication |