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| Criterion |  Architecture arc42 |  Architecture Architecture Decision Record |  Decision Making Pre-Mortem |  Architecture Request for Comments |
|---|---|---|---|---|
Purposedifferent | 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 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 early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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 | Low | Low | Low | Medium |
Timedifferent | 1-2 Tage | 15-45 min | 20–45 min | 1-3 Wochen vom Draft bis zur Entscheidung |
Participantsdifferent | 1-4 | 1-3 | Small cross-functional group | 3-20 Reviewer |
Formatdifferent | Workshop + async | Async | Workshop | Async |
Outputdifferent | Architecture Document, Context View, Runtime View, Deployment View | ADR File, Decision Log, Rationale | Risk list, Mitigation plan, Assumption log | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets |
Tagsno overlap | ArchitectureDocumentationCommunication | ArchitectureRationaleDocumentationGovernance | RiskDecisionFailurePlanning | ArchitectureDecisionAsyncGovernance |