The significant difference between live casinos and traditional gaming is that in a live dealer game, a real person deals real cards on a real table (or spins a real roulette wheel) in play.
Everything is real in live casino games and shown live as the action happens. The outcome of a game is determined in real-time instead of using a traditional software RNG.
You can interact with other players in live casino games, creating more of a social atmosphere like a land-based casino.
Live casinos are supported by companies that specialize in live dealer games, such as Global Gaming Labs and Evolution Gaming. They pay special attention to every detail, and HD-quality video makes the games pop off the screen.