A casino operator runs the site where you browse games, manage your account and...
https://www.animenewsnetwork.com/bbs/phpBB2/profile.php?mode=viewprofile&u=1270595
A casino operator runs the site where you browse games, manage your account and place bets. A slot provider creates the game itself. Provider names help you see who made a slot and find other games from the same studio in a catalogue