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| Criterion |  Engineering Failure Scenario Analysis |  Architecture C4 Model |  Facilitation Alignment Mapping |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
Purposedifferent | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | 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 several people work toward one goal but hold different mental maps, Alignment Mapping makes the discrepancies visible. It arranges goals, assumptions, and priorities so shared direction becomes verifiable. | 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 | Medium | Low | Medium | Medium |
Timedifferent | 1-3 h | 1-4 h | 1-2 h | 60-120 min |
Participantsdifferent | 3-8 | 1-5 | 4-12 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Context Diagram, Container Diagram, Component Diagram | Alignment Map, Open Issues, Decision Questions | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | FailureResilienceRisk | ArchitectureCommunicationVisualization | AlignmentStakeholdersStrategyFacilitation | ArchitectureCommunicationStakeholdersCanvas |