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| Criterion |  Business Strategy GAP Analysis |  Architecture Risk Storming |  Decision Making Pre-Mortem |  Architecture ATAM (Architecture Tradeoff Analysis Method) |
|---|---|---|---|---|
Purposedifferent | GAP Analysis compares the current state with a target picture and makes the distance manageable. It becomes useful when, ahead of new initiatives, it must become clear which capabilities, processes, or resources are missing. | Helps clarify architecture context, options, and consequences in concrete terms. It organizes technical context, alternatives, and consequences. The result is captured as an Annotated Diagram, a Prioritized Risk List, and an Action Backlog. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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 h | 60-90 min | 20–45 min | Several meetings plus preparation and analysis; total effort depends on scope |
Participantsdifferent | 2-8 | 4-12 | Small cross-functional group | Evaluation team, architects, and relevant stakeholders |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Gap Matrix, Action Plan, Risk Notes | Annotated Diagram, Prioritized Risk List, Action Backlog | Risk list, Mitigation plan, Assumption log | 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 | StrategyAnalysisPlanning | RiskArchitectureWorkshopValidation | RiskDecisionFailurePlanning | ArchitectureQualityRiskTradeoffsStakeholders |