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| Criterion |  Innovation Double Diamond |  Decision Making RAPID |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Architecture Request for Comments |
|---|---|---|---|---|
Purposedifferent | For complex problems with a fuzzy situation, the method cleanly separates search space and decision. It first creates breadth in understanding and then focus in elaboration. This brings open questions, problem definition, and solution path into a traceable movement. | In complex management decisions, clarity is often missing about who recommends, who agrees, and who makes the decision. RAPID creates this assignment and stabilizes decisions across several levels. | 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. | 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 | Medium | Medium | High | Medium |
Timedifferent | Wochen bis Monate | 45-90 min | Several meetings plus preparation and analysis; total effort depends on scope | 1-3 Wochen vom Draft bis zur Entscheidung |
Participantsdifferent | 3-12 | 3-12 | Evaluation team, architects, and relevant stakeholders | 3-20 Reviewer |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Async |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | RAPID Role Map, Recommendation, Decision Log | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | RFC document, Reviewer comments, Decision rationale, Follow-up ADR or tickets |
Tagsno overlap | ProcessDivergenceInnovation | DecisionRolesGovernance | ArchitectureQualityRiskTradeoffsStakeholders | ArchitectureDecisionAsyncGovernance |