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| Criterion |  Innovation Lean Startup |  Architecture C4 Model |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Architecture Risk Storming |
|---|---|---|---|---|
Purposedifferent | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. | Helps clarify architecture context, options, and consequences in concrete terms. It organizes technical context, alternatives, and consequences. The result is captured as an Annotated Diagram, a Prioritized Risk List, and an Action Backlog. |
Complexitydifferent | Medium | Low | High | Low |
Timedifferent | Wochen bis Monate je Lernzyklus | 1-4 h | Several meetings plus preparation and analysis; total effort depends on scope | 60-90 min |
Participantsdifferent | 2-8 | 1-5 | Evaluation team, architects, and relevant stakeholders | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Context Diagram, Container Diagram, Component Diagram | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Annotated Diagram, Prioritized Risk List, Action Backlog |
Tagsno overlap | LeanStartupValidationMVP | ArchitectureCommunicationVisualization | ArchitectureQualityRiskTradeoffsStakeholders | RiskArchitectureWorkshopValidation |