Design for Manufacturability, or DFM, is an engineering practice that takes into account not just the way a product will look or function, but also how it will be produced. By applying DFM principles to new or existing products, manufacturers can improve product quality while optimizing cost and delivery time.

According to Eagle Alloy CTO, Nic Tarzwell, "DFM is the measure of all the steps involved to produce the component cost effectively while ensuring it meets (or exceeds) expectations of form, fit and function." In order to optimize Design for Manufacturability, the customer and the supplier must work together to determine the best design and process for producing quality-finished products at the least cost.