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| Criterion |  Architecture Architecture Decision Record |  Knowledge Modeling IBIS |  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. | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | 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. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 15-45 min | 1-3 h | 30-90 min |
Participantsdifferent | 1-3 | 2-8 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Issue Map, Positions, Argument Notes | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | RationaleKnowledgeDecision | ConstraintsDecisionPlanningOptions |
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