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Selected:Learning ReviewATAM (Architecture Tradeoff Analysis Method)A3 Problem SolvingRoot Cause Analysis
| Criterion |  Operations Learning Review |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations A3 Problem Solving |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. | 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. | 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. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Medium | High | Medium | Medium |
Timedifferent | 1-3 h | Several meetings plus preparation and analysis; total effort depends on scope | 45-90 min | 1-4 h |
Participantsdifferent | 3-10 | Evaluation team, architects, and relevant stakeholders | 2-5 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Learning Review Notes, System Factors, Improvement Actions | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | A3 Report, Action Plan, Root Cause Analysis | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | LearningRetrospectiveIncidentOperations | ArchitectureQualityRiskTradeoffsStakeholders | LeanProblem solvingCoachingOperations | Root causeProblem solvingQualityIncident |