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Selected:Lean StartupFault IsolationATAM (Architecture Tradeoff Analysis Method)ARID (Active Reviews for Intermediate Designs)
| Criterion |  Innovation Lean Startup |  Engineering Fault Isolation |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Architecture ARID (Active Reviews for Intermediate Designs) |
|---|---|---|---|---|
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. | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | 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. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. |
Complexitydifferent | Medium | Medium | High | Medium |
Timedifferent | Wochen bis Monate je Lernzyklus | 30-180 min | Several meetings plus preparation and analysis; total effort depends on scope | 2–4 h review as a planning range; preparation and evaluation additional |
Participantsdifferent | 2-8 | 1-6 | Evaluation team, architects, and relevant stakeholders | Designers, developers as users, and facilitation |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions |
Tagsno overlap | LeanStartupValidationMVP | TroubleshootingDiagnosisEngineering | ArchitectureQualityRiskTradeoffsStakeholders | ArchitectureEngineeringFeedbackValidationTasks |