The biggest sports gambling companies have transformed the landscape of sports betting, leveraging technology and extensive marketing strategies. Industry leaders like DraftKings, FanDuel, and BetMGM dominate the U.S. market, offering user-friendly platforms and a wide range of betting options. Internationally, companies such as Bet365 and William Hill maintain significant influence, providing services across multiple countries. These companies capitalize on the growing acceptance of sports betting, driven by legalization efforts and increased consumer interest, while also focusing on responsible gambling initiatives to ensure player safety.