Markov Decision Processes (MDPs) are essential in modeling decision-making scenarios where both probabilistic and deterministic rewards and costs are at play, often applied in reinforcement learning. An MDP consists of five core elements: states, actions, rewards, transition probabilities, and a discount factor, gamma, which influences the prioritization of immediate versus future rewards. The Markov Property, central to MDPs, dictates that future states depend solely on the current state, not past actions. The Bellman Equation is crucial for calculating the optimal reward by recursively evaluating state values, while dynamic programming efficiently computes these values using precomputed data. Q-learning, a reinforcement learning technique, extends the MDP framework to environments where probabilities and rewards are not predefined, allowing the model to learn optimal strategies through exploration and exploitation of the environment. Techniques like simulated annealing help balance exploration and exploitation, gradually shifting focus toward promising solutions, thereby optimizing decision-making in complex tasks.