What is the tit-for-tat strategy in game theory?

What is the tit-for-tat strategy in game theory?

The tit-for-tat strategy in game theory is a retaliatory strategy where a player initially cooperates and then subsequently mimics the opponent's previous move. It involves reciprocating the opponent's actions, cooperating if they cooperate and retaliating if they defect. This strategy aims to encourage cooperation and discourage defection in repeated interactions.