Tim Cook to step down as CEO of Apple with John Ternus to succeed him

Apple's head of hardware engineering, John Ternus, will succeed Tim Cook as CEO. Mr Cook will stay at the company in the role of executive chair

Tim Cook, who succeeded Apple co-founder Steve Jobs, has been CEO since 2011.

Apple has announced that Tim Cook will step down as the company's CEO, with head of hardware engineering John Ternus to succeed him. 

Mr Cook will stay at the company in the role of executive chair.