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Selected:ARID (Active Reviews for Intermediate Designs)Blameless PostmortemLearning CardFake Door Test
| Criterion |  Architecture ARID (Active Reviews for Intermediate Designs) |  DevOps Blameless Postmortem |  Product Discovery Learning Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | 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 Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. | When demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 2–4 h review as a planning range; preparation and evaluation additional | 30-90 min | 25-40 min | 1-5 Tage |
Participantsdifferent | Designers, developers as users, and facilitation | 3-12 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Postmortem Doc, Action Items, Timeline | Learning Card with evidence and next action | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | ArchitectureEngineeringFeedbackValidationTasks | Site Reliability EngineeringIncidentLearningReliability | ExperimentsValidationDiscoveryLearning | ValidationExperimentsDemandDiscovery |