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| Criterion |  Architecture Request for Comments |  Delivery RAID Log |  Operations 5 Whys |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|---|
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. | Helps clarify scope, sequence, and delivery flow in concrete terms. It makes work, boundaries, and order steerable. The result is captured as a RAID Log and a source for status reporting. | 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. | ATAM helps teams weigh architecture decisions when quality goals compete. The team considers business goals, stakeholder expectations, and technical decisions together. The evaluation shows which risks need further investigation. |
Complexitydifferent | Medium | Low | Low | High |
Timedifferent | 1-3 Wochen vom Draft bis zur Entscheidung | 30 min Setup, dann laufend | 15-30 min | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 3-20 Reviewer | 1-3 maintaining, briefing for everyone | 2-6 | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Async | Async | Workshop | Workshop + async |
Outputdifferent | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets | RAID Log, Status Report Source | Root cause notes, Countermeasures | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations |
Tagsno overlap | ArchitectureDecisionAsyncGovernance | RiskTrackingStakeholdersGovernance | Root causeIncidentLeanProblem solving | ArchitectureQualityRiskTradeoffsStakeholders |