Hello, an electronic payment system is a service that allows businesses and users to make payments on the Internet using a bank account. If the seller is located in another city or country, it is easy and safe to pay for a product or service from your bank account (for example, if it's time to pay a loan via the Internet, and the borrower is abroad and cannot visit a bank branch, you can make a payment using a smartphone or computer). For example, at https://payadmit.com/features/selling-software-online/ you can read information about the payment system, which is convenient for selling software.