A Product ID is a unique identifier assigned to a specific product, allowing businesses to track and manage their inventory efficiently. This identifier can be in the form of a number, barcode, or alphanumeric code, and it helps distinguish one product from another in a catalog or database. Product IDs are essential for various processes, including sales, shipping, and inventory management. They enable retailers and manufacturers to quickly locate products, monitor stock levels, and streamline order fulfillment, ultimately improving customer service and operational efficiency.