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| Criterion |  Architecture ATAM (Architecture Tradeoff Analysis Method) |  Operations Time Blocking |  Operations Fishbone Diagram |  Operations ALPEN Method |
|---|---|---|---|---|
Purposedifferent | 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. | With a calendar that grows on request, the method makes available time explicit again. It combines appointments, focus work, and buffer into a more realistic day structure. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. |
Complexitydifferent | High | Low | Low | Low |
Timedifferent | Several meetings plus preparation and analysis; total effort depends on scope | 15-30 min Planung, laufend | 30-60 min | 10-20 min daily |
Participantsdifferent | Evaluation team, architects, and relevant stakeholders | 1 | 2-8 | 1 |
Formatdifferent | Workshop + async | Async | Workshop | Async |
Outputdifferent | Prioritized quality scenarios in a utility tree, Architecture risks with reasoning and assumptions, Sensitivity and trade-off points, Findings report with open investigations | Blocked Calendar, Capacity View, Focus Plan | Fishbone Diagram, Cause Categories, Investigation Backlog | Daily Plan, Time Estimates, Review Notes |
Tagsno overlap | ArchitectureQualityRiskTradeoffsStakeholders | PlanningTime managementFocus | Root causeQualityOperations | PlanningTime managementProductivityOperations |