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| Criterion |  Product Discovery Working Backwards |  Decision Making DACI |  Architecture arc42 |  Architecture Request for Comments |
|---|---|---|---|---|
Purposedifferent | When the target state and benefit need to be clear first, it thinks backward from the desired outcome into the product logic. It sharpens vision, objections, and value proposition before elaboration. | 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. | 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. | 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. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 4-8 h, mehrere Iterationen | 30-60 min | 1-2 Tage | 1-3 Wochen vom Draft bis zur Entscheidung |
Participantsdifferent | 2-6 | 2-10 | 1-4 | 3-20 Reviewer |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Future Press Release, FAQ, Vision Statement | DACI Matrix, Decision Owner, Decision Log | Architecture Document, Context View, Runtime View, Deployment View | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets |
Tagsno overlap | VisionNarrativeAlignment | DecisionRolesGovernanceAlignment | ArchitectureDocumentationCommunication | ArchitectureDecisionAsyncGovernance |