A payment gateway is a system that can be integrated into a site so that the customer can transfer the funds to the site’s merchant bank account, instead of to a PayPal account. A payment gateway is a service that authorizes payment for e-business, and online retailers.it is similar to a terminal located in most retail outlets.
Payment gateways protect credit/debit card details by encrypting sensitive information, such as credit/debit card numbers, to ensure that information is passed securely between the customer and the merchant and also between the merchant and the payment processor.
In simple terms, we can say that By the Payment Gateway system you can manage or receive your client's payments via an online payment system Via Credit Card, Debit Card (Master, Visa), etc.