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Selected:Constraint AnalysisArchitecture Decision RecordArchitecture Communication CanvasRequest for Comments
| Criterion |  Decision Making Constraint Analysis |  Architecture Architecture Decision Record |  Architecture Architecture Communication Canvas |  Architecture Request for Comments |
|---|---|---|---|---|
Purposedifferent | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. | 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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | 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 | Medium | Medium |
Timedifferent | 30-90 min | 15-45 min | 60-120 min | 1-3 Wochen vom Draft bis zur Entscheidung |
Participantsdifferent | 2-8 | 1-3 | 2-8 | 3-20 Reviewer |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | ADR File, Decision Log, Rationale | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets |
Tagsno overlap | ConstraintsDecisionPlanningOptions | ArchitectureRationaleDocumentationGovernance | ArchitectureCommunicationStakeholdersCanvas | ArchitectureDecisionAsyncGovernance |