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| Criterion |  DevOps Blameless Postmortem |  Operations ABC Analysis |  Operations Ivy Lee Method |  Operations Learning Review |
|---|---|---|---|---|
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. | With many similar objects of differing economic significance, the method prioritizes effort by effect. It separates what needs regular steering from what rarely needs attention. | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 30-90 min | 30-60 min | 5-10 min daily | 1-3 h |
Participantsdifferent | 3-12 | 1-5 | 1 | 3-10 |
Formatdifferent | Workshop + async | Async | Async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | ABC Classification, Focus Rules, Control List | Daily Priority List, Completion Notes | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | PrioritizationOperationsPortfolio | PrioritizationProductivityExecution | LearningRetrospectiveIncidentOperations |