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| Criterion |  Architecture Request for Comments |  Engineering Fault Isolation |  Engineering Hypothesis-Driven Troubleshooting |  Decision Making DACI |
|---|---|---|---|---|
Purposedifferent | 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. | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 1-3 Wochen vom Draft bis zur Entscheidung | 30-180 min | 30-240 min | 30-60 min |
Participantsdifferent | 3-20 Reviewer | 1-6 | 1-6 | 2-10 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | ArchitectureDecisionAsyncGovernance | TroubleshootingDiagnosisEngineering | TroubleshootingProblem solvingDiagnosis | DecisionRolesGovernanceAlignment |