Artificial Intelligence (AI) simulates human intelligence through software and is prevalent across various industries, from healthcare to finance. It can be categorized into weak AI, designed for specific tasks, and strong AI, which operates in a human-like manner, with ongoing debates about ethics, job displacement, and privacy concerns. Key applications include diagnostic assistance in healthcare, fraud detection in finance, and autonomous vehicles, with continuous advancements leading to both excitement and skepticism about the future of AI.