Artificial Intelligence (AI) refers to the simulation of human intelligence in machines designed to think, learn, and perform tasks that typically require human cognitive functions. AI encompasses a variety of techniques and technologies, including Machine Learning, natural language processing, computer vision, and robotics, enabling systems to understand, interpret, and respond to complex data.

At its core, AI involves the development of algorithms that can analyze and learn from data to make predictions or decisions without explicit programming for each specific task. For example, Machine Learning, a subset of AI, allows systems to improve their performance over time as they are exposed to more data.

AI applications range widely from personal assistants like Siri and Alexa to more complex systems like autonomous vehicles and predictive analytics in healthcare. The ultimate goal of AI is to create systems that can operate autonomously and efficiently, enhancing productivity and enabling new capabilities in various fields.