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| Criterion |  DevOps Blameless Postmortem |  Operations Ivy Lee Method |  Operations Barrier 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. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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 | 2-4 h | 15-90 min daily |
Participantsdifferent | 3-12 | 1 | 2-6 | 1 |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Daily Priority List, Completion Notes | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Priority Task, Completion Note, Daily Focus |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | PrioritizationProductivityExecution | Root causeSafetyIncident | PrioritizationProductivityFocusExecution |