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| Criterion |  Operations Change Analysis |  Architecture Architecture Decision Record |  Systems Thinking Evaporating Cloud |  Systems Thinking Future Reality Tree |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | The method makes visible why two seemingly incompatible demands arise and which assumption must be tested to resolve the conflict. | A Future Reality Tree shows how desired actions are meant to lead to a better system state. The method checks whether a path of change holds together logically before time flows into implementation. |
Complexitydifferent | Medium | Low | Medium | High |
Timedifferent | 45-120 min | 15-45 min | 60-120 min | 2-4 h |
Participantsdifferent | 2-6 | 1-3 | 2-8 | 3-8 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | ADR File, Decision Log, Rationale | Conflict Cloud, Assumption List, Breakthrough Ideas, Next Experiments | Future Reality Tree, Negative Branches, Assumption List, Improved Injections |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | ArchitectureRationaleDocumentationGovernance | Theory of ConstraintsAssumptionsSystems thinking | Theory of ConstraintsSystems thinkingChange |