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| Criterion |  Operations A3 Problem Solving |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Product Discovery Riskiest Assumption Test |
|---|---|---|---|
Purposedifferent | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 45-90 min | Several meetings plus preparation and analysis; total effort depends on scope | 1-2 Wochen pro Iteration |
Participantsdifferent | 2-5 | Evaluation team, architects, and relevant stakeholders | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | 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 |
Tagsno overlap | LeanProblem solvingCoachingOperations | ArchitectureQualityRiskTradeoffsStakeholders | ExperimentsValidationDiscoveryAssumptions |
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