Apple Inc: Tim Cook's Apple legacy by the numbers
CEO hands over to John Ternus on Tuesday after 15 years
Apple chief executive Tim Cook hands over the reins to his successor John Ternus on Tuesday, capping 15 years at the top of one of the world's biggest companies.
Success for Cook, who will become executive chair, has been built on wringing more money out of users on Apple's billions of devices, fine-tuning its supply chain to maintain high margins and exercising tight control of its ecosystem in the name of privacy.