A bet exchange is a special kind of website that lets people place bets on certain events. People can place bets on who they think will win a game or race, or which team will come out on top. Bet exchanges let people bet with each other and not with the website itself. So instead of betting with a website, you can bet with another person who has the same opinion as you about who will win. The website just acts as a middleman to make sure everything runs smoothly. So if you and another person both think the same team will win, you can place bets on them and the website will take care of it all.