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| Criterion |  Architecture Architecture Decision Record |  Operations ALPEN Method |  Operations Change Analysis |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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. | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | Low | Low | Medium | High |
Timedifferent | 15-45 min | 10-20 min daily | 45-120 min | 2-6 h |
Participantsdifferent | 1-3 | 1 | 2-6 | 3-10 |
Formatdifferent | Async | Async | Workshop + async | Workshop |
Outputdifferent | ADR File, Decision Log, Rationale | Daily Plan, Time Estimates, Review Notes | Change Matrix, Cause Hypotheses, Validation Questions, Action List | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | PlanningTime managementProductivityOperations | ChangeRoot causeTroubleshootingComparison | RiskQualityOperationsRoot cause |