Edge is a term that refers to someone having an advantage over someone else, and the term is used both outside and inside casinos. When it comes to casinos in particular, however, the term you will encounter most frequently is house edge.
Edge or house edge is used to refer to the advantage that gambling establishments have over the players. In order for casinos to function and make a profit, they implement rules that give them an edge over the players, while ensuring that the players have fair chances of winning.
House edge is usually displayed in percentages, and it can be as low as 1%. However, keep in mind that the house edge can easily change depending on the game you’re playing, side bets, and additional rules included in the game.
One thing to note is that the house edge is the opposite of RTP, which stands for Return to Player and refers to the percentage the player is expected to win back in the long run.