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| Criterion |  Agile Sprint Retrospective |  Architecture arc42 |  Operations After-Action Review |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
Purposedifferent | When a sprint is over and friction shouldn't simply be carried forward, it opens the view onto collaboration and patterns. It creates space to see causes and changes together. | 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 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. | 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 | Low | Medium |
Timedifferent | Up to 3 hours for a one-month Sprint; shorter Sprints are usually shorter | 1-2 Tage | 20-45 min | 60-120 min |
Participantsdifferent | Scrum Team | 1-4 | 3-12 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Improvement actions, Team agreements | Architecture Document, Context View, Runtime View, Deployment View | Lessons learned, Action items, Event summary | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | RetrospectiveImprovementLearning | ArchitectureDocumentationCommunication | LearningOperationsImprovement | ArchitectureCommunicationStakeholdersCanvas |