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Selected:Fault IsolationATAM (Architecture Tradeoff Analysis Method)Request for CommentsArchitecture Decision Record
| Criterion |  Engineering Fault Isolation |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Architecture Request for Comments |  Architecture Architecture Decision Record |
|---|---|---|---|---|
Purposedifferent | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | 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. | An RFC clarifies architecture context, options, and consequences. It structures technical context, alternatives, tradeoffs, open questions, and review feedback, and captures the result as an RFC document, reviewer comments, and a decision rationale. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. |
Complexitydifferent | Medium | High | Medium | Low |
Timedifferent | 30-180 min | Several meetings plus preparation and analysis; total effort depends on scope | 1-3 Wochen vom Draft bis zur Entscheidung | 15-45 min |
Participantsdifferent | 1-6 | Evaluation team, architects, and relevant stakeholders | 3-20 Reviewer | 1-3 |
Formatdifferent | Workshop + async | Workshop + async | Async | Async |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | ADR File, Decision Log, Rationale |
Tagsno overlap | TroubleshootingDiagnosisEngineering | ArchitectureQualityRiskTradeoffsStakeholders | ArchitectureDecisionAsyncGovernance | ArchitectureRationaleDocumentationGovernance |