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| Criterion |  Decision Making Pre-Mortem |  Delivery Communication Plan |  Architecture Request for Comments |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | 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. | When many people need to be informed in parallel and messages would otherwise arrive unevenly or too late, a Communication Plan orders communication reliably. Channels, audiences, and cadences interlock so important information doesn't get lost. | 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. | 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 | Low | Medium | Low |
Timedifferent | 20–45 min | 45-90 min | 1-3 Wochen vom Draft bis zur Entscheidung | 1-2 Tage |
Participantsdifferent | Small cross-functional group | 2-6 | 3-20 Reviewer | 1-4 |
Formatdifferent | Workshop | Workshop + async | Async | Workshop + async |
Outputdifferent | Risk list, Mitigation plan, Assumption log | Communication Plan, Channel Matrix, Message Cadence | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | RiskDecisionFailurePlanning | CommunicationStakeholdersDeliveryPlanning | ArchitectureDecisionAsyncGovernance | ArchitectureDocumentationCommunication |