AI stands for Artificial Intelligence, which is the simulation of human intelligence processes by computer systems. These processes include learning (the acquisition of information and rules for using the information), reasoning (using the rules to reach approximate or definite conclusions), and self-correction. AI systems can be trained to perform tasks that typically require human intelligence such as visual perception, speech recognition, decision-making, and language translation. AI technologies have a wide range of applications, from virtual assistants and recommendation systems to autonomous vehicles and medical diagnosis tools.