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| Criterion |  Operations 8D Problem Solving |  Architecture Architecture Decision Record |  Operations Kepner-Tregoe |  Architecture Request for Comments |
|---|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | 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. |
Complexitydifferent | High | Low | High | Medium |
Timedifferent | 1-6 Wochen | 15-45 min | 2-8 h | 1-3 Wochen vom Draft bis zur Entscheidung |
Participantsdifferent | 4-10 | 1-3 | 2-8 | 3-20 Reviewer |
Formatdifferent | Workshop + async | Async | Workshop + async | Async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | ADR File, Decision Log, Rationale | Problem Analysis, Decision Analysis, Risk Plan | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets |
Tagsno overlap | QualityProblem solvingRoot cause | ArchitectureRationaleDocumentationGovernance | Problem solvingRoot causeDecisionOperations | ArchitectureDecisionAsyncGovernance |