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| Criterion | ![]() Engineering Failure Scenario Analysis | ![]() Architecture Architecture Decision Record | ![]() Architecture Request for Comments | ![]() Decision Making Argument Mapping |
|---|---|---|---|---|
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. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | An RFC clarifies architecture context, options, and consequences. It structures technical context, alternatives, tradeoffs, open questions, and review feedback, and captures the result as an RFC document, reviewer comments, and a decision rationale. | When statements, evidence, and counterarguments get mixed up, a debate quickly loses its structure. Argument Mapping breaks a thesis down into its reasoning and makes visible what it really rests on. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 1-3 h | 15-45 min | 1-3 Wochen vom Draft bis zur Entscheidung | 1-3 h |
Participantsdifferent | 3-8 | 1-3 | 3-20 Reviewer | 1-8 |
Formatdifferent | Workshop | Async | Async | Workshop + async |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | ADR File, Decision Log, Rationale | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | Argument Map, Evidence Gaps, Decision Rationale |
Tagsno overlap | FailureResilienceRisk | ArchitectureRationaleDocumentationGovernance | ArchitectureDecisionAsyncGovernance | SensemakingDecisionRationale |



