Artificial Intelligence (AI) refers to the development of computer systems that can perform tasks that typically require human intelligence, such as visual perception, speech recognition, decision-making, and natural language processing.

AI can be classified into two broad categories: Narrow or Weak AI and General or Strong AI. Narrow AI is designed to perform a specific task or set of tasks, such as language translation, image recognition, or playing chess. General AI, on the other hand, is designed to be able to learn and perform any intellectual task that a human can.

There are several techniques used to develop AI systems, including machine learning, deep learning, neural networks, and natural language processing. These techniques allow AI systems to learn from data and improve their performance over time without being explicitly programmed.

AI has numerous applications in various fields, including healthcare, finance, transportation, manufacturing, and entertainment. For example, AI can be used to develop personalized healthcare treatments, optimize financial portfolios, enhance driver safety, automate manufacturing processes, and create intelligent video games.

While AI has the potential to revolutionize many industries, it also raises concerns about job displacement, privacy, bias, and ethics. As such, it is essential to develop AI systems that are transparent, accountable, and designed to benefit society as a whole.