Using basic strategy in Blackjack involves making decisions based on mathematical probabilities to minimize the house edge and maximize potential outcomes. This strategy dictates the optimal action—whether to hit, stand, double down, or split—depending on the player's hand and the dealer's upcard. By following a predetermined set of guidelines, players can systematically evaluate their options and make the best possible decision at each stage of the game. This approach enhances overall play and reduces the influence of luck, allowing players to rely on statistical probabilities rather than instinct or emotion when deciding how to play their hands.