Cook is the man behind the company with the world's largest market capitalization -- more than $930 billion as of May 2018 - Apple.
Cook joined Apple in March 1998 as a senior vice president for worldwide operations, and then served as the executive vice president for worldwide sales and operations.
He took over Apple after the company’s founder, Steve Jobs, succumbed to cancer in 2011. Cook has helped navigate Apple through the transition after Jobs’ death as well as developing new product lines and opening Apple retail stores in China. He has also led a very public battle against the FBI and their demand that Apple creates a backdoor for users’ iPhones.
Cook also runs the most profitable business in America --Apple brought in more than $48 billion in net income last year.
The iPhone X was released in November 2017 and cost $999. Amid criticism of slow sales Cook defended it as "the most innovative product."
He's a hugely influential player in technology, design, publishing, and entertainment, although Apple Music is still trailing behind Spotify.
According to forbes.com