Betting structures in poker vary based on the rules governing wager limits and player actions. Some variations, like no-limit poker, allow players to bet any amount of their chips, emphasizing strategy and risk-taking. Fixed-limit poker imposes strict limits on bet sizes, focusing more on disciplined decision-making. Pot-limit poker restricts bets to the size of the current pot, balancing risk and reward. These differences influence gameplay dynamics, strategic approaches, and the level of complexity in decision-making.