Tech Jeff Bezos steps down as Amazon CEO today. Here are some of his biggest moments as he becomes executive chair July 5, 2021July 6, 2021 Terry Collins, USA TODAY Comments Off on Jeff Bezos steps down as Amazon CEO today. Here are some of his biggest moments as he becomes executive chair Andy Jassy replaces Jeff Bezos as Amazon CEO effective July 5. Bezos, the world's richest person, becomes executive chair.