Artificial Intelligence (AI) is a field of computer science that focuses on the development of intelligent agents, which are systems that can perceive their environment and take actions to achieve goals. AI systems can be divided into two categories: narrow AI and general AI.

Narrow AI, also known as weak AI, is designed to perform a specific task, such as image recognition, language translation, or playing chess. Narrow AI systems are trained on large amounts of data and they are able to improve their performance over time through machine learning.

General AI, also known as strong AI, is designed to perform any intellectual task that a human can. It's not currently available, but it's a subject of ongoing research in the field of AI.

AI has the potential to transform many industries and improve the efficiency and effectiveness of many processes. It's used in fields such as finance, healthcare, transportation, and retail. It's also used in areas such as image recognition, speech recognition.