A casino is a gambling establishment that features table games like blackjack and roulette, and also offers slot machines. Some casinos also have restaurants, shows, and other entertainment facilities. A casino can be located in a stand-alone building, in a resort, or on a cruise ship. Some states have legalized casino gambling, while others have prohibited it. In the United States, some of the most famous casinos are located in Las Vegas.

In the early 1990s, many casinos increased their use of technology for security and game monitoring. For example, betting chips have built-in microcircuitry that interacts with electronic systems to enable the casinos to oversee the exact amounts wagered minute by minute, and to warn the players of any anomaly; and roulette wheels are monitored electronically to discover statistical deviations quickly.

Moreover, modern casinos rely on technology for customer support and management as well. In the past, customers might have to wait long for a response to a question or problem, but now most casinos offer 24/7 live customer support via telephone, email, and online chat. Some even have dedicated mobile apps for their patrons to access.

Aside from customer service, another important factor to consider when choosing a casino is its selection of games and amenities. Most people visit a casino to gamble, but some also do it for the food, entertainment, and accommodations. The top casinos in the world offer a variety of gaming options and feature luxurious suites, top-notch restaurants, and dazzling entertainment.