Artificial Intelligence (AI) is a branch of computer science that focuses on the development of intelligent machines that can perform tasks that would typically require human intelligence to accomplish.

AI systems use algorithms and statistical models to process and analyze vast amounts of data, identify patterns and trends, and make decisions based on that information. They can be trained to perform a wide range of tasks, such as speech recognition, natural language processing, image and video analysis, and game playing.

There are various subfields of AI, including machine learning, deep learning, natural language processing, computer vision, robotics, and expert systems. AI is used in a variety of applications, including self-driving cars, virtual assistants, medical diagnosis, fraud detection, and predictive analytics.

AI has the potential to transform many aspects of our lives, from healthcare and transportation to education and entertainment. However, there are also concerns about the ethical and societal implications of AI, such as job displacement, privacy violations, and bias in decision-making.