A casino is a gambling establishment, usually combined with entertainment, where customers gamble by playing games of chance. The games may have an element of skill, and the house edge (the statistical advantage against the players) varies from game to game. The gambling house also earns money by taking a commission on winning bets, which is known as the vig or rake. Casinos can also host events, such as stage shows and concerts.

A modern casino can have thousands of slot machines and hundreds of table games. Some are large enough to be considered resorts and offer luxury amenities like top-notch hotels, spas, and restaurants. Other casinos are much smaller and simply serve as gaming rooms.

Most casinos are built near or combined with other tourist attractions and entertainment venues, such as hotels, restaurants, retail shops, and cruise ships. They are designed to appeal to a wide range of guests, from middle-class families to high rollers. They also provide employment opportunities to local residents.

The casino business is a profitable industry, with annual revenue reaching over USD 126.3 billion in 2025. The global market is expected to continue growing, driven by the rapid rise in popularity of online gambling and the expanding global economy. In order to succeed, casinos must remain competitive and offer innovative products and services. To do this, they must stay up-to-date with the latest technology trends. In addition, they must be able to manage their finances and ensure that all their employees receive proper training.