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| Criterion |  Agile 4Ls Retrospective |  Architecture C4 Model |  Architecture Architecture Communication Canvas |  Architecture Architecture Inception Canvas |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | The Architecture Inception Canvas bundles the first architecture questions into a compact decision picture. It fits when an initiative is still in motion but still needs clear guardrails. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 45–75 min | 1-4 h | 60-120 min | 1-2 h |
Participantsdifferent | Team members involved | 1-5 | 2-8 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | 4Ls Board, Learning Themes, Improvement Actions | Context Diagram, Container Diagram, Component Diagram | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Inception Canvas, Risks, Goal List, Open Questions |
Tagsno overlap | RetrospectiveLearningReflectionTeam | ArchitectureCommunicationVisualization | ArchitectureCommunicationStakeholdersCanvas | AlignmentArchitectureCanvas |