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| Criterion |  Product Discovery Working Backwards |  Architecture arc42 |  Architecture Request for Comments |  Architecture Architecture Decision Record |
|---|---|---|---|---|
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. | 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. | 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. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 4-8 h, mehrere Iterationen | 1-2 Tage | 1-3 Wochen vom Draft bis zur Entscheidung | 15-45 min |
Participantsdifferent | 2-6 | 1-4 | 3-20 Reviewer | 1-3 |
Formatdifferent | Workshop + async | Workshop + async | Async | Async |
Outputdifferent | Future Press Release, FAQ, Vision Statement | Architecture Document, Context View, Runtime View, Deployment View | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | ADR File, Decision Log, Rationale |
Tagsno overlap | VisionNarrativeAlignment | ArchitectureDocumentationCommunication | ArchitectureDecisionAsyncGovernance | ArchitectureRationaleDocumentationGovernance |