Jeff Bezos walks through a one-way door, opening a new age for Amazon

Jeff Bezos has a formulation about one-way doors and two-way doors—decisions that are irreversible and permanent and those that can always be unwound. Stepping through what’s almost certainly a one-way door on Tuesday, Bezos said he will resign as chief executive officer of Amazon.com Inc and become executive chairman later this year. He will hand day-to-day control to Andy Jassy, his longtime head of Amazon Web Services, a swiftly growing division that has almost singlehandedly changed the way companies buy the technology that powers their businesses.