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| Criterion |  Decision Making PERT Estimation |  Decision Making Delphi Method |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Decision Making Wideband Delphi |
|---|---|---|---|---|
Purposedifferent | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk Notes. | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer 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. | A single opinion rarely holds up for planning when the future is genuinely uncertain. It separates options, evaluation criteria, and open risks. The result is captured as an Estimate Range, Assumption Log, and Expert Consensus Notes. |
Complexitydifferent | Medium | High | High | High |
Timedifferent | 15-45 min | 1-4 Wochen | Several meetings plus preparation and analysis; total effort depends on scope | 1-4 h or multiple rounds |
Participantsdifferent | 1-8 | 6-30 Experten | Evaluation team, architects, and relevant stakeholders | 4-12 Experten |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | PERT Estimate, Expected Value, Risk Notes | Expert Forecast, Consensus Range, Assumption Notes | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Estimate Range, Assumption Log, Expert Consensus Notes |
Tagsno overlap | EstimationUncertaintyRisk | ForecastingExpertsDecisionStrategy | ArchitectureQualityRiskTradeoffsStakeholders | EstimationExpertsForecasting |