Alan Kay is an American computer scientist and one of the pioneers of personal computing, known for his vision of graphical user interfaces and object-oriented programming. He earned his Ph.D. in computer science from the University of Utah and has worked at several prestigious institutions, including Xerox PARC, where he was instrumental in the development of early computing technologies. Kay is best known for his work on the development of the graphical user interface (GUI) and his role in shaping the future of interactive computing. His contributions have had a lasting impact on how we interact with computers today.