I worked in an online casino before. It typically works like a referral program in a casino. When you sign up, you will have your own link. You will use your link to invite people to register or sign up under your link. This way you will earn your revenue share or commission from that casino. When I worked in an online casino before, we also looked for influencers or streamers with huge amount of followers, this way, we could ensure that they can invite many people to play on our platform and at the same time make sure that they will get commission or benefit from our casino. To make their invitation more attractive, we give perks to the people who register under the link of that streamer or influencer.