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| Criterion |  DevOps Blameless Postmortem |  Operations Ivy Lee Method |  Operations Root Cause Analysis |  Operations Eat the Frog |
|---|---|---|---|---|
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 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. | 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. | The method protects energy and attention for the task that creates the largest progress and is often postponed. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 30-90 min | 5-10 min daily | 1-4 h | 15-90 min daily |
Participantsdifferent | 3-12 | 1 | 3-8 | 1 |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Daily Priority List, Completion Notes | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Priority Task, Completion Note, Daily Focus |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | PrioritizationProductivityExecution | Root causeProblem solvingQualityIncident | PrioritizationProductivityFocusExecution |