online payment service
It has been suggested that this article or section be merged with Payment Services Providers. (Discuss)A Payment Service Provider (PSP) offers merchants online services for accepting electronic payments by credit card or other payment methods such as payments based on online banking.
Typically, a PSP can connect to multiple acquiring banks and card networks, thereby making the merchant less dependent of financial institutions - especially when operating internationally.
Furthermore, a PSP can offer reconciliation services, risk management and multi-currency functionality. USPS - Online Payment Services Discontinued.