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| Criterion |  Operations 8D Problem Solving |  Architecture arc42 |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. | 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 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 | High | Low | High | Medium |
Timedifferent | 1-6 Wochen | 1-2 Tage | Several meetings plus preparation and analysis; total effort depends on scope | 1-4 h |
Participantsdifferent | 4-10 | 1-4 | Evaluation team, architects, and relevant stakeholders | 3-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Architecture Document, Context View, Runtime View, Deployment View | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | QualityProblem solvingRoot cause | ArchitectureDocumentationCommunication | ArchitectureQualityRiskTradeoffsStakeholders | Root causeProblem solvingQualityIncident |