If you are running an online business that accepts online payments, you must have stumbled upon various payment processors like PayPal, Square, or Stripe. These three are probably the most popular online payment brands in the world and the first choice for most startups and new merchants.
Every business accepting online payments needs to have at least one of these: a merchant account, a payment service provider account, or a payment gateway.
In a perfect world, if a user decides to pay for the service or content you are offering, they will simply click all the way through to the payment gateway, and proceed with the payment – simple as that.