Cash on delivery (COD) is a payment method where customers pay for goods at the time of delivery rather than in advance. This approach allows buyers to inspect their purchases before making a payment, providing a sense of security and trust in the transaction. COD is commonly used in online shopping and delivery services, especially in regions where credit card usage is low. It helps businesses reach a wider audience by accommodating customers who prefer to pay in cash, ensuring that they receive their items before committing to payment.