what do billing address mean refers to the address associated with a payment method, such as a credit card or bank account, that is used for billing purposes. The billing address is typically the address where the credit card statements or account bills are sent. It is important for e-commerce transactions because it helps verify the identity of the cardholder and prevent fraudulent activity. When making an online purchase, customers will be asked to provide their billing address to match the information on file with their payment provider. This ensures the security and accuracy of the transaction.