This document provides an overview of artificial intelligence (AI), including its definition, history, current applications, challenges, and future. It begins with defining AI as the study of computer systems that attempt to mimic human intelligence. The early history section then discusses the origins of AI research from the 1950s onwards, including the first AI program called the "Logic Theorist". Current applications of AI discussed include automated customer support, personalized shopping, and financial forecasts. Challenges for AI include computing power, tolerance, intuitive and judging power. The future sections predicts that AI will speed up life through faster decision making but also raise issues around privacy, regulation, and human-AI collaboration.