From DSC:
Numerous articles are out there on this, but here’s a handful of them:

Jeff Bezos to Step Down as Amazon C.E.O. — form nytimes.com
Andy Jassy, the chief of Amazon’s cloud computing division, will become chief executive, while Mr. Bezos, the company’s founder, will become executive chairman.

How new Amazon CEO Andy Jassy built an enterprise tech juggernaut — from protocol.com
Using lessons honed from a stint as outgoing CEO Jeff Bezos’ right hand, Jassy changed the way enterprise tech is bought and sold in building the most profitable division of the company.

Jeff Bezos is stepping down as Amazon CEO: Read his full letter to staff — from fastcompany.com
Day One is finally over for Jeff Bezos.