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Selected:Failure Scenario AnalysisATAM (Architecture Tradeoff Analysis Method)Riskiest Assumption TestAssumption Surfacing
| Criterion |  Engineering Failure Scenario Analysis |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Product Discovery Riskiest Assumption Test |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
Purposedifferent | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | 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. | When an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. |
Complexitydifferent | Medium | High | Medium | Low |
Timedifferent | 1-3 h | Several meetings plus preparation and analysis; total effort depends on scope | 1-2 Wochen pro Iteration | 45-90 min |
Participantsdifferent | 3-8 | Evaluation team, architects, and relevant stakeholders | 2-6 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Prioritized Assumption List, Test Plan, Results Report | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | FailureResilienceRisk | ArchitectureQualityRiskTradeoffsStakeholders | ExperimentsValidationDiscoveryAssumptions | AssumptionsRiskDecisionDiscovery |