PMI's Definition 1: Artificial Intelligence (Al) is the simulation of human intelligence in machines that can perform tasks, learn from experiences, and adapt to new situations.  From this course: https://tinyurl.com/mr2bc9b4

PMI's Definition 2:  AI is a machine behavior and function that exhibits human intelligence and behavior. From this book: https://tinyurl.com/58b662ut

Microsoft's Definition: Artificial Intelligence (Al) is the ability of a computer program or machine to mimic human-like behavior. From this course: https://tinyurl.com/8rkv672d

Scaled Agile's Definition: Artificial Intelligence (Al) is a term used to describe a wide range of smart machines capable of performing tasks that typically required human intelligence.  From here: https://tinyurl.com/5586btwp