Bankroll management is a strategic approach to Blackjack that involves setting and managing a dedicated budget for playing the game, with the goal of minimizing risk and maximizing profitability. Players use bankroll management to determine the optimal bet size, spread, and playing frequency, based on their current bankroll size and the game's volatility. This approach helps players maintain a sustainable level of play, avoid going broke, and make informed decisions about when to increase or decrease their bets, ultimately leading to a more profitable and enjoyable experience.