Artificial Intelligence (AI) refers to the development of computer systems or software that can perform tasks typically requiring human intelligence. This includes capabilities such as learning from experience, understanding natural language, recognizing patterns, solving problems, and making decisions. AI is broadly categorized into two types: narrow AI, which is specialized for specific tasks (like virtual assistants and recommendation systems), and general AI, which aims to perform any intellectual task that a human can do. Key techniques used in AI include Machine Learning, where algorithms improve through exposure to data; neural networks, which are inspired by the human brain and process data in layers; and natural language processing, enabling machines to understand and interact in human language. The applications of AI span various industries, including healthcare, finance, transportation, and entertainment, and continue to evolve rapidly, with ethical considerations and challenges around automation and data privacy emerging as crucial discussions in the field.