Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, particularly computer systems. It encompasses a variety of technologies and approaches, including machine learning, natural language processing, computer vision, and robotics. AI systems are designed to perform tasks that typically require human intelligence, such as understanding language, recognizing patterns, solving problems, and making decisions.

Machine learning, a subset of AI, allows systems to learn from data and improve over time without being explicitly programmed for every possible outcome. Natural language processing enables machines to understand and generate human language, facilitating interactions between computers and humans. Computer vision involves interpreting and understanding visual information from the world, while robotics focuses on physical tasks performed by machines.

AI applications are widespread, ranging from virtual assistants like Siri and Alexa, to autonomous vehicles, recommendation systems used by platforms like Netflix and Amazon, and advanced analytics in various industries. Overall, AI represents a transformative technology with the potential to enhance efficiency and decision-making across numerous sectors.