AI, or Artificial Intelligence, refers to computer systems designed to perform tasks that typically require human intelligence, such as learning, reasoning, problem-solving, and understanding language. AI technologies can analyze large amounts of data, recognize patterns, and make decisions or predictions with minimal human intervention. Modern AI is used in various applications, including virtual assistants, fraud detection, medical diagnostics, and autonomous vehicles. Unlike traditional software, AI systems can improve over time by learning from new data and experiences, making them highly adaptable and efficient in complex environments.