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Selected:T-Shirt SizingPERT Estimation8D Problem SolvingATAM (Architecture Tradeoff Analysis Method)
| Criterion |  Agile T-Shirt Sizing |  Decision Making PERT Estimation |  Operations 8D Problem Solving |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|---|
Purposedifferent | When effort only needs to be classified roughly, it makes comparability more important than false precision. It helps sort work quickly into manageable sizes. | 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. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. |
Complexitydifferent | Low | Medium | High | High |
Timedifferent | 15-45 min | 15-45 min | 1-6 Wochen | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 2-12 | 1-8 | 4-10 | Evaluation team, architects, and relevant stakeholders |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Size Buckets, Rough Backlog Map, Split Candidates | PERT Estimate, Expected Value, Risk Notes | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations |
Tagsno overlap | EstimationAgileRoadmap | EstimationUncertaintyRisk | QualityProblem solvingRoot cause | ArchitectureQualityRiskTradeoffsStakeholders |