Online casino is a term that refers to a website or mobile application that allows players to gamble for real money. These websites often offer a variety of gambling games, from blackjack and roulette to slots and video poker. Some even offer keno and bingo. In addition, many offer specialty titles like Sic-Bo, an ancient Chinese dice game. The casino online industry is growing rapidly, and more states are legalizing it.

To become an online casino, a business must meet certain requirements. They must be licensed and regulated by the government, use encryption to protect player information, and test their games for fairness. They should also have a 24/7 customer support team. Finally, they should have a secure payment processor that allows them to accept credit and debit cards.

In order to attract new customers, online casinos must invest in marketing and digital advertising. This can include SEO, social media, and push notifications. In addition, it is important to track and optimize ads to maximize ROI. One way to do this is by using a platform like Keitaro, which can help you measure and optimize your campaigns.

It is also important for an online casino to nurture the relationship with its existing clients. This can be done by offering personalized communication, loyalty programs, and excellent customer service. It can also be done by using gamification and surveys to encourage user engagement. In addition, a casino should provide high-value promotions to entice new and existing customers.