John Ternus will assume the Apple chief‑executive role in September, stepping into a company wrestling with AI doubts and a tighter supply chain. The 50‑year‑old hardware veteran has been behind many of the iPhone maker’s biggest bets over the past decade, but his ascent now tests whether Apple’s hardware‑first DNA can survive a generative‑AI wave.

During his tenure as head of hardware, Ternus pushed the “skinny” iPhone Air and the budget‑friendly MacBook Neo, both of which missed sales targets, and oversaw the underwhelming Vision Pro launch. He also led Apple’s shift to in‑house silicon, a move that slashed outsourcing costs and gave the firm tighter product control, earning him a reputation for engineering rigor.

Investors will gauge John Ternus on his ability to build an AI platform that developers and enterprises adopt, a task Tim Cook says will define the next era. With a new CFO, operations chief and AI lead already in place, the board hopes the internal successor can keep Apple’s $4tn market cap intact while delivering a compelling Siri upgrade.