How do payouts work on sites?

Question

Payment systems

Hello! Now there are many sites on the Internet like Nvuti, DragonMoney, Play2x, in a nutshell, these are sites with various gambling games, but not casinos.

On these sites, people replenish their accounts daily and request money for withdrawal, they are specifically interested in the second point - how are payments made to users when there are a lot of them? It probably doesn't happen by hand. Also where should the money be kept, by the site administrators, to be paid out?

Answer 1

There are companies that provide API payments.
PS What is the difference between gambling and casinos, if they are one and the same.