What is the time interval from when a customer order is received to when the product is delivered?

• A. Delivery lead time
• B. Order cycle time
• C. Manufacturing lead time
• D. Delivery window

Answer: (D)

The time from when a customer order is received to when the product is delivered is the delivery lead time. This measures the total elapsed time to fulfill an order, including processing the order, any production or assembly, picking and packing, and transporting the product to the customer. It reflects how quickly the system can respond to a customer request.

Delivery lead time contrasts with manufacturing lead time, which would only cover the production stage and omit processing and delivery. The term order cycle time can vary in meaning, but it’s often focused on the steps up to shipment rather than the full delivery to the customer. A delivery window, meanwhile, is a promised range for when delivery will occur, not the actual elapsed time itself.