greiðsluhliðrun
Greidsluhliðrun, often translated as payment gateway or payment processor, refers to a service that authorizes and manages credit card and other electronic payments for businesses. These systems act as intermediaries between the customer, the merchant, and the financial institutions involved in a transaction. When a customer makes a purchase online or in a physical store, the greidsluhliðrun securely captures the payment information, such as card number, expiry date, and CVV. It then transmits this data to the acquiring bank, which communicates with the card network (like Visa or Mastercard) and the issuing bank for verification and approval.
Upon successful authorization, the greidsluhliðrun confirms the transaction to the merchant, allowing the sale to proceed.