Vertical coordination in a supply chain refers to coordination between which levels?

• A. Coordination between different supply chain levels (e.g., supplier → manufacturer).
• B. Coordination between companies at the same level.
• C. Coordination within a single company's departments.
• D. Coordination between customers and suppliers.

Answer: (A)

Vertical coordination means aligning actions across the different levels of the supply chain—the steps from a supplier to a manufacturer, then to a distributor or retailer, and ultimately to the customer. By coordinating demand, production, and delivery across these levels, firms can improve information flow, reduce lead times, and cut costs. For example, a supplier and manufacturer sharing forecast data and coordinating production helps ensure materials arrive just in time and production schedules stay in sync with demand.

Coordinating with others at the same level is horizontal coordination, not vertical. Coordinating inside a single company’s departments is internal coordination, not across external supply chain levels. While interacting with customers is important, vertical coordination specifically refers to the levels of the chain itself, from supplier through to the end customer.