A payment service provider is a company that helps people or businesses make payments to each other online. Imagine if you want to buy something on the internet like a toy or a game, but you don't have any money in your pocket. So, you can use your parent's credit card to pay for it. But how do you give the money to the company that sold you the toy or the game? That's where the payment service provider comes in.
The payment service provider is like a helper who takes the money from your parent's credit card and gives it to the company that sold you the toy or the game. They make sure the money goes through safely and securely.
The payment service provider has special computer programs that can do this work really quickly and easily. They also make sure that your parent's credit card number and other important information is kept safe and not stolen by bad guys.
So, to make a long story short, a payment service provider is like a helper that helps people pay for things online using credit cards or other ways to pay.