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| Criterion |  DevOps Blameless Postmortem |  Operations ALPEN Method |  Architecture Architecture Communication Canvas |  Delivery Communication Plan |
|---|---|---|---|---|
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 an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | When many people need to be informed in parallel and messages would otherwise arrive unevenly or too late, a Communication Plan orders communication reliably. Channels, audiences, and cadences interlock so important information doesn't get lost. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 30-90 min | 10-20 min daily | 60-120 min | 45-90 min |
Participantsdifferent | 3-12 | 1 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Daily Plan, Time Estimates, Review Notes | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Communication Plan, Channel Matrix, Message Cadence |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | PlanningTime managementProductivityOperations | ArchitectureCommunicationStakeholdersCanvas | CommunicationStakeholdersDeliveryPlanning |