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| Criterion |  DevOps Blameless Postmortem |  Operations Eat the Frog |  Operations Causal Factor Analysis |  Operations Ivy Lee Method |
|---|---|---|---|---|
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. | The method protects energy and attention for the task that creates the largest progress and is often postponed. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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. |
Complexitydifferent | Medium | Low | High | Low |
Timedifferent | 30-90 min | 15-90 min daily | 2-6 h | 5-10 min daily |
Participantsdifferent | 3-12 | 1 | 3-10 | 1 |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Priority Task, Completion Note, Daily Focus | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Daily Priority List, Completion Notes |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | PrioritizationProductivityFocusExecution | CausalityIncidentRoot causeTimeline | PrioritizationProductivityExecution |