Vendor-managed inventory (VMI) is a supply chain initiative where the vendor, or supplier, is responsible for managing and replenishing the inventory of their products at the customer's location. This approach helps streamline the inventory management process by shifting the responsibility from the retailer to the vendor, allowing for improved efficiency and potentially reduced costs. In this setup, the vendor closely monitors inventory levels and sales data to determine when to restock, ensuring that products are available when needed without overstocking.