AP
Jeff Bezos founded Amazon when he was 30 in 1994.
- The tech industry with all its innovation, glamour, and youth can still be incredibly stressful. As companies launch, go public, and tackle turmoil, executives go gray, lose weight, and forget to buy eye cream.
- Tech execs like Facebook's Mark Zuckerberg and Amazon's Jeff Bezos were once fresh faces on the scene. Now, they've crafted themselves into multibillionaires while growing their businesses into worldwide success stories.
- Take a look at how dramatically these tech execs have changed since they've started the job.
Any time Mark Zuckerberg mentions Facebook, he often brings up how he started it in his dorm room at Harvard when he was just 20 years old. Early photos of Zuckerberg show him in a plain t-shirt, sweats, and Adidas sandals lounging on the steps of his would-be alma mater.
And although Zuckerberg's wardrobe hasn't changed much (albeit the slides and sweats), the company he founded has.
Today, Facebook has more than 2.3 billion users and has fought to keep its reputability as privacy scandals continue to plague the social network and Zuckerberg himself.
Take a look at how dramatically other world-famous CEOs changed over the course of their job:
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