Value analysis and value engineering aim to identify the essential functions of a product and provide them at the lowest total cost. This is done through a team-based process that examines all aspects of a product and explores all alternative designs and materials. The goal is to determine if a product's cost is reasonable relative to its usefulness, if a lower-cost design could work as well, and if less expensive materials could be used without compromising quality or function. Savings are achieved through substituting cheaper materials and standardizing components where possible. The process also seeks to optimize product design, manufacturing processes, material usage, and reduce scrap.