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| Criterion |  Operations ALPEN Method |  Architecture Request for Comments |  Operations 5 Whys |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | An RFC clarifies architecture context, options, and consequences. It structures technical context, alternatives, tradeoffs, open questions, and review feedback, and captures the result as an RFC document, reviewer comments, and a decision rationale. | 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. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Low | Medium | Low | Medium |
Timedifferent | 10-20 min daily | 1-3 Wochen vom Draft bis zur Entscheidung | 15-30 min | 1-4 h |
Participantsdifferent | 1 | 3-20 Reviewer | 2-6 | 3-8 |
Formatdifferent | Async | Async | Workshop | Workshop + async |
Outputdifferent | Daily Plan, Time Estimates, Review Notes | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | Root cause notes, Countermeasures | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | PlanningTime managementProductivityOperations | ArchitectureDecisionAsyncGovernance | Root causeIncidentLeanProblem solving | Root causeProblem solvingQualityIncident |