A payment gateway is a service that allows people to send money. Money is sent online from one place to another. The money sent in this case is for e-businesses and household shops.
It is a service that is given by a bank to their customer. A payment gateway is a portal that acts as a medium of transfer.
Online transactions play an important role in every part of the world. Digital marketing depends upon this gateway. People rely on this because the way of providing services over the last 10 years has changed.