When a company as huge and influential as Apple makes a change in its top leadership, the world pays attention, since a high-level leadership change could affect the future trajec

What was once a single, broad mandate for the COO has now been split—and as a result, the pathway to succeed Cook as CEO has become obscured.

A once leading candidate to replace Tim Cook as Apple’s CEO announced his retirement Tuesday. Chief Operating Officer Jeff Williams, who has worked at Apple for 27 years, will be replaced in a “long-planned succession” by Sabih Khan,