A casino online is an internet-based gambling establishment that allows players to place wagers on games, sports or events. They offer a wide variety of gaming options, including virtual games and live dealer casinos. Most real money online casinos use advanced encryption technology to ensure that all personal and financial information is safe from prying eyes. This is why you should always check the security of a casino before playing for real money.

Most US casinos online are regulated by state gaming control boards. This means that they must adhere to strict rules and regulations and display them on their websites. You should also look for a license, which indicates that the casino is legitimate and has been vetted by a recognized gambling authority.

Another important factor to consider when choosing a casino online is its customer support. The best sites offer 24/7 live chat and email support. They should also be able to provide you with a detailed FAQ section for less urgent questions.

A good casino online will offer a full range of casino games, including classic card and table games like blackjack and roulette. They may also offer a full selection of video slots. In addition, some online casinos will offer a live dealer feature, which allows you to play with a human dealer from the comfort of your own home. However, these live dealer games tend to be more expensive to run than their virtual counterparts, so they are not available at every casino online.