1. A factory for manufacturing customized products in response to customer orders, the factory comprising: pre-packaging facilities in which components are converted into completed products; packaging facilities in which the completed products are packaged; an order management system that associates individually identified products among the completed products with a customer order; product release logic in the order management system that accumulates the individually identified products in the pre-packaging facilities and releases the individually identified products for transport from the pre-packaging facilities to the packaging facilities only after determining that substantially all of the individually identified products for the customer order have been completed.