The steps to make it to the top slot at a company aren't cut and dried. The current CEOs of the top 100 companies in the Fortune 500 have examples of both entrepreneurs and those who climbed the career ladder in a more traditional way. There’s Jeff Bezos who started Amazon as an online bookseller in 1995, and Frederick Smith who launched FedEx. Then there’s Tim Cook, who joined Apple in 1998 and worked his way up to CEO when Steve Jobs resigned in 2011.
