A casino operator runs the site and manages your account. A slot provider makes...

https://mega-wiki.win/index.php/Why_Do_Slot_Games_Load_Slowly_on_Some_Phones%3F

A casino operator runs the site and manages your account. A slot provider makes the games. Provider names show who made a slot and help you find other titles by that studio. Visuals and sound may differ, but they do not change the game rules.