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| Criterion |  Decision Making Assumption Surfacing |  Architecture Architecture Decision Record |  Decision Making Decision Rights Mapping |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | 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 organizations with many stakeholders, it often blurs who actually decides and who is merely consulted. It separates options, evaluation criteria, and open risks. The result is captured as a Decision Rights matrix and an agreement. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 45-90 min | 15-45 min | 90-180 min | 1-2 Tage |
Participantsdifferent | 2-8 | 1-3 | 4-12 | 1-4 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop + async |
Outputdifferent | Assumption List, Critical Assumptions, Learning Plan | ADR File, Decision Log, Rationale | Decision Rights Matrix, Agreement | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | AssumptionsRiskDecisionDiscovery | ArchitectureRationaleDocumentationGovernance | DecisionGovernanceAlignmentResponsibility | ArchitectureDocumentationCommunication |