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| Criterion |  Product Strategy Lean Canvas |  DevOps Blameless Postmortem |  Business Strategy 5-Minuten VC-Check |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | When an early product bet still has too many open points, it brings target group, problem, and assumptions into a single view. It condenses the idea so core risks become nameable. | 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 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. | 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 | Medium | Medium | Low | Low |
Timedifferent | 45-90 min | 30-90 min | 5-15 min | 15-30 min |
Participantsdifferent | 1-6 | 3-12 | 1-5 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Lean Canvas, Core Assumptions, Experiment Backlog | Postmortem Doc, Action Items, Timeline | VC-check note, Go/sharpen/park decision, Risk and assumption list, Next validation step | Root cause notes, Countermeasures |
Tagsno overlap | StartupLeanAssumptionsBusiness model | Site Reliability EngineeringIncidentLearningReliability | StartupValidationCompetition | Root causeIncidentLeanProblem solving |