A casino operator runs the site and manages your account, while a slot provider...

https://johnnywrbo401.wpsuo.com/what-should-i-check-if-a-slot-game-feels-confusing

A casino operator runs the site and manages your account, while a slot provider makes the game. Provider names show who built each title and help you compare games in a catalogue. Visuals and sound may vary, but they do not change the game rules.