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Selected:Blameless PostmortemViews and BeyondRoot Cause AnalysisATAM (Architecture Tradeoff Analysis Method)
| Criterion |  DevOps Blameless Postmortem |  Architecture Views and Beyond |  Operations Root Cause Analysis |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|---|
Purposedifferent | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | Views and Beyond organizes architecture into several views so no single diagram has to do everything at once. This makes it possible to choose the representation that fits the stakeholder's question. | 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. | 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 | Medium | Medium | Medium | High |
Timedifferent | 30-90 min | 1-3 Tage | 1-4 h | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 3-12 | 1-4 | 3-8 | Evaluation team, architects, and relevant stakeholders |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Architecture Views, Cross-view Notes, Rationale | Problem Statement, Cause Hypotheses, Confirmed Causes, 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 | Site Reliability EngineeringIncidentLearningReliability | DocumentationStakeholdersArchitecture | Root causeProblem solvingQualityIncident | ArchitectureQualityRiskTradeoffsStakeholders |