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| Criterion |  Architecture C4 Model |  Agile Mad Sad Glad |  Operations After-Action Review |  Agile 4Ls Retrospective |
|---|---|---|---|---|
Purposedifferent | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | When a team's or workshop's mood needs to become readable, it structures emotional signals with little setup. It makes strain, relief, and sources of energy tangible. | 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. | When a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. |
Complexitysame | Low | Low | Low | Low |
Timedifferent | 1-4 h | 30-60 min | 20-45 min | 45–75 min |
Participantsdifferent | 1-5 | 3-10 | 3-12 | Team members involved |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Emotion Board, Themes, Action Items | Lessons learned, Action items, Event summary | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | ArchitectureCommunicationVisualization | RetrospectiveTeamReflection | LearningOperationsImprovement | RetrospectiveLearningReflectionTeam |