A casino operator runs the site, manages accounts and lists games. A slot...

https://wiki-wire.win/index.php/What_Is_a_Slot_Game_State_in_Plain_English%3F

A casino operator runs the site, manages accounts and lists games. A slot provider makes the game. Provider names show who designed a slot and help you compare titles. Visuals and sound may differ, but they do not change the game rules.