(a)  “Severable services” means services that are continuing and ongoing in nature—such as help-desk support, maintenance, or janitorial services—for which benefit is received each time the service is rendered.

(b)  “Non-severable services” means work that results in a final product or end-item and for which benefit is received only when the entire project is complete, such as systems design, building conversion, or environmental study.

(c)  Contracts for severable services may cross fiscal years as long as the period of performance (excluding options) is no more than 12 months. Contracts for goods or non-severable services are not similarly limited.