Apple CEO Tim Cook will step down after a 15-year tenure, handing the leadership of the tech giant to John Ternus, a senior vice president of hardware engineering, later this year.

• Tim Cook, who took over from Steve Jobs in 2011, will transition to executive board chairman.
• The 65-year-old Cook has overseen Apple's expansion and growth, with the company's value reaching approximately $4 trillion.
• John Ternus, with a background in hardware engineering, is expected to guide Apple as it navigates advancements in artificial intelligence.