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| Criterion |  Architecture Architecture Decision Record |  Architecture Request for Comments |  Operations ALPEN Method |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. | 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 | Low | Medium | Low | Low |
Timedifferent | 15-45 min | 1-3 Wochen vom Draft bis zur Entscheidung | 10-20 min daily | 1-2 Tage |
Participantsdifferent | 1-3 | 3-20 Reviewer | 1 | 1-4 |
Formatdifferent | Async | Async | Async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | Daily Plan, Time Estimates, Review Notes | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | ArchitectureDecisionAsyncGovernance | PlanningTime managementProductivityOperations | ArchitectureDocumentationCommunication |