Classes of Service (CoS)
Classes of service (CoS) provide a transparent way of categorizing the incoming work items and ensuring they are properly prioritized and governed to lead to meeting customer expectations. They enable managing risk, priorities, and cost of delay. Expedite High-priority items that should be worked on as soon as possible. Expedite class work items have critical...
Use it or do not do poster. YAGNI or You Ain't Gonna Need It is a principle for saving costs for things that are not required at the moment.