Hello everyone, who can explain to me what a payment gateway is and what are its main functions?

Hello, there are many online payment options for small businesses. With several alternatives, there is a payment method for every small business. Whichever payment methods you use depends on your business and consumers. If you need a reliable payment solution, I can recommend you visit https://payadmit.com/features/cryptocurrency-payments/ to read information about the payment system that allows you to process all online payments in a different currency.