A production environment where a good or service can be assembled after receipt of a customer's order. The key components (bulk, semi- finished, intermediate, subassembly, fabricated, purchased, packing, and so on) used in the assembly or finishing process are planned and usually stocked in anticipation of a customer order. Receipt of an order initiates assembly of the customized product. This strategy is useful where a large number of end products (based on the selection of options and accessories) can be assembled from common components. Synonym: finish-to-order. Also see: Make-to-Order, Make-to-Stock.