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| Criterion |  Product Strategy Lean Canvas |  Architecture Request for Comments |  Architecture Architecture Decision Record |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | 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. | 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 | 45-90 min | 1-3 Wochen vom Draft bis zur Entscheidung | 15-45 min | 1-2 Tage |
Participantsdifferent | 1-6 | 3-20 Reviewer | 1-3 | 1-4 |
Formatdifferent | Workshop + async | Async | Async | Workshop + async |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | ADR File, Decision Log, Rationale | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | StartupLeanAssumptionsBusiness model | ArchitectureDecisionAsyncGovernance | ArchitectureRationaleDocumentationGovernance | ArchitectureDocumentationCommunication |