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| Criterion |  Engineering Failure Scenario Analysis |  Architecture C4 Model |  Architecture Risk Storming |  Decision Making Pre-Mortem |
|---|---|---|---|---|
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. | Helps clarify architecture context, options, and consequences in concrete terms. It organizes technical context, alternatives, and consequences. The result is captured as an Annotated Diagram, a Prioritized Risk List, and an Action Backlog. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 1-3 h | 1-4 h | 60-90 min | 20–45 min |
Participantsdifferent | 3-8 | 1-5 | 4-12 | Small cross-functional group |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Context Diagram, Container Diagram, Component Diagram | Annotated Diagram, Prioritized Risk List, Action Backlog | Risk list, Mitigation plan, Assumption log |
Tagsno overlap | FailureResilienceRisk | ArchitectureCommunicationVisualization | RiskArchitectureWorkshopValidation | RiskDecisionFailurePlanning |