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| Criterion |  Operations After-Action Review |  Architecture arc42 |  DevOps Blameless Postmortem |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
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. | 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 20-45 min | 1-2 Tage | 30-90 min | 60-120 min |
Participantsdifferent | 3-12 | 1-4 | 3-12 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Lessons learned, Action items, Event summary | Architecture Document, Context View, Runtime View, Deployment View | Postmortem Doc, Action Items, Timeline | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | LearningOperationsImprovement | ArchitectureDocumentationCommunication | Site Reliability EngineeringIncidentLearningReliability | ArchitectureCommunicationStakeholdersCanvas |