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| Criterion |  Business Strategy 5-Minuten VC-Check |  DevOps Blameless Postmortem |  Operations A3 Problem Solving |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | The 5-Minute VC Check clarifies opportunities and strategic options at the earliest idea stage. It compares problem quality, customer willingness to pay, alternatives, differentiation, and market potential, and captures the result as a VC-check note, go/sharpen/park decision, and risk list. | 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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 5-15 min | 30-90 min | 45-90 min | 15-30 min |
Participantsdifferent | 1-5 | 3-12 | 2-5 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | VC-check note, Go/sharpen/park decision, Risk and assumption list, Next validation step | Postmortem Doc, Action Items, Timeline | A3 Report, Action Plan, Root Cause Analysis | Root cause notes, Countermeasures |
Tagsno overlap | StartupValidationCompetition | Site Reliability EngineeringIncidentLearningReliability | LeanProblem solvingCoachingOperations | Root causeIncidentLeanProblem solving |