Online casinos are websites or apps that offer a variety of casino games over the internet. They are usually licensed by gambling authorities and follow strict regulations to protect players. This ensures that the games they offer are fair, and that the random number generator software works correctly. Online casinos also use secure encryption to prevent unauthorized access to player accounts. They also make sure that their customer support is available 24/7 and that they can answer any questions that their players may have.

Aside from ensuring that their customers are protected, the best online casinos will also have a large library of casino games to keep players entertained. They will also offer various promotions and bonuses to attract new customers. This could be in the form of free spins or extra credits when they make their first deposit. They will also advertise their website through Google Adwords and hire an SEO expert to optimize their site for search engine results.

Unlike real casinos, which are usually tied into a small selection of games, online casinos can switch up the games they offer as frequently as they like. This means that they can offer the latest releases alongside old favourites, so that there is something for everyone. In addition, they can often offer a live casino option where players can interact with real dealers in real time.

Some of the most popular casino games include roulette, blackjack and poker. The odds are stacked in favour of the house, but it is still possible to win some of these games if you have a good strategy.