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Selected:Request for CommentsARID (Active Reviews for Intermediate Designs)5 WhysRoot Cause Analysis
| Criterion |  Architecture Request for Comments |  Architecture ARID (Active Reviews for Intermediate Designs) |  Operations 5 Whys |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | ARID examines how well developers can work with a technical design. It focuses on a part of the system that can still be revised, between the architecture overview and the detailed specification. | 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 | Medium | Medium | Low | Medium |
Timedifferent | 1-3 Wochen vom Draft bis zur Entscheidung | 2–4 h review as a planning range; preparation and evaluation additional | 15-30 min | 1-4 h |
Participantsdifferent | 3-20 Reviewer | Designers, developers as users, and facilitation | 2-6 | 3-8 |
Formatdifferent | Async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | Prioritized development tasks, Jointly produced code or pseudocode, Observed difficulties and open design questions, Proposed design revisions | Root cause notes, Countermeasures | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | ArchitectureDecisionAsyncGovernance | ArchitectureEngineeringFeedbackValidationTasks | Root causeIncidentLeanProblem solving | Root causeProblem solvingQualityIncident |