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| Criterion |  Architecture Architecture Decision Record |  Decision Making Pre-Mortem |  Decision Making Constraint Analysis |
|---|---|---|---|
Purposedifferent | 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. | 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. | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. |
Complexitysame | Low | Low | Low |
Timedifferent | 15-45 min | 20–45 min | 30-90 min |
Participantsdifferent | 1-3 | Small cross-functional group | 2-8 |
Formatdifferent | Async | Workshop | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Risk list, Mitigation plan, Assumption log | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | RiskDecisionFailurePlanning | ConstraintsDecisionPlanningOptions |
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