An operator runs the casino site and manages accounts, payments, and game...
https://wiki-site.win/index.php/What_Does_%E2%80%9CFeature_Transition%E2%80%9D_Mean_in_Slot_Testing%3F
An operator runs the casino site and manages accounts, payments, and game access. A slot provider makes the game. Provider names show who created each title and help you browse a catalogue. Different visuals or sound do not change the game’s rules.