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Selected:Lean StartupATAM (Architecture Tradeoff Analysis Method)Root Cause AnalysisFailure Mode and Effects Analysis
| Criterion |  Innovation Lean Startup |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Root Cause Analysis |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | 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. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | Medium | High | Medium | High |
Timedifferent | Wochen bis Monate je Lernzyklus | Several meetings plus preparation and analysis; total effort depends on scope | 1-4 h | 2-6 h |
Participantsdifferent | 2-8 | Evaluation team, architects, and relevant stakeholders | 3-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | 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 | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | LeanStartupValidationMVP | ArchitectureQualityRiskTradeoffsStakeholders | Root causeProblem solvingQualityIncident | RiskQualityOperationsRoot cause |