This document provides an overview of artificial intelligence (AI), including definitions, a history of AI, current applications and challenges. It begins with definitions of AI and discusses early milestones like the first AI conference in 1956 and Deep Blue defeating a chess champion in 1997. It outlines current progress in deep learning, natural language processing, robotics and autonomous vehicles. Key challenges are biases in data, lack of transparency in models, issues with data availability and security/privacy. The future of AI is discussed in terms of advancements in deep learning, increased healthcare applications, and focus on ethics.