This document provides an overview of artificial intelligence, including its definition, history, approaches, tools, evaluation, and applications. It defines AI as the science and engineering of making intelligent machines, especially intelligent computer programs, and studying how the human brain thinks, learns, decides, and solves problems. The history section notes important milestones in AI's development from ancient myths to the modern field's founding in 1956. The document also outlines various traits of intelligent systems, approaches to AI, tools used in AI research and development, methods for evaluating AI systems, and applications of AI technology.