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| Criterion |  Architecture Request for Comments |  Architecture Architecture Decision Record |  Decision Making Constraint Analysis |  Decision Making DACI |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 1-3 Wochen vom Draft bis zur Entscheidung | 15-45 min | 30-90 min | 30-60 min |
Participantsdifferent | 3-20 Reviewer | 1-3 | 2-8 | 2-10 |
Formatdifferent | Async | Async | Workshop + async | Workshop + async |
Outputdifferent | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | ADR File, Decision Log, Rationale | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | DACI Matrix, Decision Owner, Decision Log |
Tagsno overlap | ArchitectureDecisionAsyncGovernance | ArchitectureRationaleDocumentationGovernance | ConstraintsDecisionPlanningOptions | DecisionRolesGovernanceAlignment |