Comment by paxys

It was public knowledge that Bezos stopped running Amazon day-to-day a while ago. It was headed by the two execs under him (Andy Jassy for AWS and Jeff Wilke for retail). Jassy even had the CEO (of AWS) title. With Wilke announcing his retirement a few months ago, Jassy was the clear frontrunner to take over from Bezos. In hindsight I guess Wilke retired because Jassy was picked over him. The timing of the announcement is unexpected, but nothing else.