Weighted shortest job first - In this method, the weight of a job is divided by the duration or size. The weight that is specifically recommended for product or service development is the cost of delay. Cost of delay is a measure that indicates value realization in terms of lost outcomes and retained uncertainty. In traditional service management terms, cost of delay can be considered a result of delay to service impact (service outcome), urgency (time criticality), and risk (uncertainty). Each job or requirement is scored and then prioritized according to its cost of delay divided by its duration (CD3).