Apple on Tuesday named insider Sabih Khan as its chief operating officer, taking over from Jeff Williams, as part of a long-planned succession. Khan, who has been with Apple for 30 years and is currently the senior vice president of operations,

Apple COO Jeff Williams is retiring after 27 years. His exit marks another recent major leadership shift at the company.

Jeff Williams has been Apple's Chief Operating Officer since 2010, but he's begun his retirement process and will be passing the reins to Sabih Khan.