Payment Gateway (OTG – On The Go)

A payment gateway is a technology used by merchants to accept debit or credit card purchases from customers. The term includes not only the physical card-reading devices found in brick-and-mortar retail stores, but also the payment processing portals found in online stores. In recent years, brick-and-mortar payment gateways have begun accepting phone-based payments using Near Field Communication (NFC) technology.

The payment gateway is a key component of the electronic payment processing system, as it is the front-end technology responsible for sending customer information to the merchant acquiring bank, where the transaction is then processed.