FanDuel Group is a subsidiary of Flutter Entertainment plc, the world's largest sports betting and gaming operator with a portfolio of globally recognized brands and a constituent of the FTSE 100 index of the London Stock Exchange.
The affiliate earns a commission when their referrals engage with the casino for instance, by signing up, depositing money, or placing a bet. It's a win-win situation: the casino partner (affiliate) gets rewarded for successful referrals and the casino benefits from new players and increased business.