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Selected:ATAM (Architecture Tradeoff Analysis Method)Incident Timeline AnalysisArchitecture Communication CanvasBlameless Postmortem
| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  DevOps Incident Timeline Analysis |  Architecture Architecture Communication Canvas |  DevOps Blameless Postmortem |
|---|---|---|---|---|
Purposedifferent | 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 an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | 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. |
Complexitydifferent | High | Medium | Medium | Medium |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 60-180 min | 60-120 min | 30-90 min |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 3-10 | 2-8 | 3-12 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | IncidentTimelineSite Reliability Engineering | ArchitectureCommunicationStakeholdersCanvas | Site Reliability EngineeringIncidentLearningReliability |