AI (Artificial Intelligence) can be defined as the ability of a machine or computer system to simulate human-like intelligence and behavior. This includes tasks such as problem-solving, learning, language processing, and decision-making. AI systems are designed to analyze and understand large amounts of data, identify patterns and correlations, and make predictions or recommendations based on this information. They can also adapt and improve their performance over time through machine learning techniques. AI has been applied in various domains including healthcare, finance, transportation, and entertainment, and continues to advance rapidly.