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Selected:Fault IsolationBusiness Model Stress TestARID (Active Reviews for Intermediate Designs)Value Chain Analysis
| Criterion |  Engineering Fault Isolation |  Business Strategy Business Model Stress Test |  Architecture ARID (Active Reviews for Intermediate Designs) |  Business Strategy Value Chain Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | A Business Model Stress Test checks how well a business model holds up under pressure and headwinds. It compares strengths, risks, market logic, and courses of action. The result is captured as a stress-test report and action plan per scenario. | 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. | Value Chain Analysis shows where value is created, costs accrue, and differentiation becomes possible along the process. It compares strengths, risks, market logic, and courses of action. The result is captured as a value-chain map and lever list. |
Complexitydifferent | Medium | High | Medium | High |
Timedifferent | 30-180 min | Half day | 2–4 h review as a planning range; preparation and evaluation additional | Half day |
Participantsdifferent | 1-6 | 3-8 | Designers, developers as users, and facilitation | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Stress Test Report, Action Plan per Scenario | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Value Chain Map, Lever List |
Tagsno overlap | TroubleshootingDiagnosisEngineering | StrategyBusiness modelRiskDiagnosis | ArchitectureEngineeringFeedbackValidationTasks | StrategyBusiness modelDiagnosisAnalysis |