A company designs a product from scratch to meet a specific customer's needs and then manufactures it. Which production type is this?

• A. Make to Stock
• B. Make to Order
• C. Assemble to Order
• D. Engineer to Order

Answer: (D)

Engineering to order is used when a product is designed anew to meet a customer's exact requirements before manufacturing begins. In this scenario, the company designs the product from scratch to fit the specific needs and then manufactures it, which is the defining trait of ETO. This approach involves close collaboration with the customer, substantial engineering effort, and longer lead times because the product isn’t a standard item. It differs from making to stock, which produces items in anticipation of demand, and from making to order or assemble to order, which rely on pre-existing designs or standard modules rather than a new, custom design for that customer.