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| Criterion |  Operations Ivy Lee Method |  DevOps Blameless Postmortem |  Operations A3 Problem Solving |
|---|---|---|---|
Purposedifferent | 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 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. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 5-10 min daily | 30-90 min | 45-90 min |
Participantsdifferent | 1 | 3-12 | 2-5 |
Formatdifferent | Async | Workshop + async | Workshop + async |
Outputdifferent | Daily Priority List, Completion Notes | Postmortem Doc, Action Items, Timeline | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | PrioritizationProductivityExecution | Site Reliability EngineeringIncidentLearningReliability | LeanProblem solvingCoachingOperations |
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