A Customer ID is a unique identifier assigned to each customer by a business or organization. This number helps companies keep track of their customers' information, such as purchase history, preferences, and account details. By using a Customer ID, businesses can efficiently manage customer relationships and provide personalized services. Customer IDs are commonly used in various industries, including retail, banking, and online services. They can be found on receipts, account statements, or customer profiles. This system ensures that customer data is organized and easily accessible, enhancing the overall customer experience and improving service delivery.