Artificial Intelligence (AI) refers to the simulation of human intelligence processes by computer systems. These processes include learning (the acquisition of information and rules for using it), reasoning (using rules to reach approximate or definite conclusions), and self-correction. AI systems can perform a variety of tasks, such as recognizing speech, understanding natural language, solving problems, and making decisions.

There are various subfields within AI, such as Machine Learning, where algorithms analyze data and learn from it to improve their performance over time; neural networks, which are designed to mimic the way human brains operate; and natural language processing, which focuses on the interaction between computers and humans through language.

AI technologies are utilized in numerous applications today, ranging from voice assistants like Siri and Alexa to recommendation systems on platforms like Netflix and Amazon. The aim of AI is not only to replicate human cognitive functions but also to enhance efficiency and productivity in various sectors, including healthcare, finance, manufacturing, and beyond. As AI continues to evolve, it raises ethical and philosophical questions about its impact on society, jobs, and the future of human interaction with machines.