The largest betting sites, such as Bet365, William Hill, and DraftKings, dominate the online gambling landscape by offering a wide range of sports, casino games, and live betting options. These platforms attract millions of users with their competitive odds, user-friendly interfaces, and extensive promotions. They also prioritize security and responsible gambling practices, ensuring a safe environment for bettors. With mobile compatibility and innovative features like in-play betting, these sites continue to enhance the betting experience, making them popular choices for both casual and seasoned gamblers.