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

https://tysonsinterestingperspectives.cloudhinter.com/posts/who-actually-animates-slot-symbols-the-artist-or-the-developer

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.