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| Criterion |  Architecture Request for Comments |  Operations Barrier Analysis |  Architecture Architecture Decision Record |  Architecture arc42 |
|---|---|---|---|---|
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. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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. | 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 | Medium | Medium | Low | Low |
Timedifferent | 1-3 Wochen vom Draft bis zur Entscheidung | 2-4 h | 15-45 min | 1-2 Tage |
Participantsdifferent | 3-20 Reviewer | 2-6 | 1-3 | 1-4 |
Formatdifferent | Async | Workshop + async | Async | Workshop + async |
Outputdifferent | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | ADR File, Decision Log, Rationale | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | ArchitectureDecisionAsyncGovernance | Root causeSafetyIncident | ArchitectureRationaleDocumentationGovernance | ArchitectureDocumentationCommunication |