Artificial Intelligence (AI) refers to the simulation of human intelligence processes by machines, particularly computer systems. This includes the ability to learn (acquire information and the rules for using it), reason (use the rules to reach approximate or definite conclusions), and self-correct.

AI encompasses various subfields, including Machine Learning (where computers are trained to learn from data), natural language processing (the ability of machines to understand and respond to human language), robotics (machines capable of performing tasks autonomously), and computer vision (enabling machines to interpret and understand the visual world).

In essence, AI aims to build systems capable of performing tasks that normally require human intelligence, such as visual perception, speech recognition, decision-making, and language translation, among others. As technology continues to evolve, AI is becoming increasingly integrated into everyday life, driving advancements across numerous industries, from healthcare to finance, and even creative fields.