John Ternus formally became Apple’s chief executive on Tuesday, ending Tim Cook’s 15-year run at the top. Cook, 65, is not disappearing: as executive chairman, Apple says he will continue handling selected company matters, including engagement with policymakers around the world.¹

Cook has framed the succession as a model of continuity. At a July premiere for Ted Lasso, he said Apple had set “the standard of the best ever” for the handover and that events were unfolding “exactly” as hoped.¹ In a farewell message shared online, he told Apple staff that his title would change but his affection for the company community would not.Aravind Srinivas (AravSrinivas)²

The timing leaves little room for ceremony. Ternus, previously Apple’s hardware chief, told employees to expect a “huge launch next week,” putting the next iPhone event at the new CEO’s doorstep almost immediately.³ Apple is also expected to unveil a foldable iPhone this month—its biggest redesign of its core product in 19 years—while again trying to weave AI across its lineup.¹

That is where the upbeat succession story collides with a harder corporate reality. Consumer-tech analyst Michael Gartenberg says Apple must answer “what’s next?” and make itself feel like “a cool brand again,” even as a multitrillion-dollar company.¹ Berkeley’s Jennifer Chatman offers a parallel warning: a company accustomed to a stable inner circle must decide whether it has brought in enough new ideas.¹

Ternus has been assembling his own team amid departures, including hardware leaders moving to Oura and OpenAI; Apple’s July intellectual-property lawsuit against OpenAI said more than 400 former Apple employees now work there.¹ The immediate public response, however, has been warm: Perplexity CEO Aravind Srinivas praised Cook for maintaining Apple’s “bar for excellence” at vast scale.²

The longer test is whether Cook’s continuing presence steadies Ternus—or shadows him. Harvard professor David Yoffie says the decisive moment will come if the two diverge on big bets, from deeper AI spending to reviving the Apple car or abandoning Vision Pro development.¹ As Ternus made his own brief entrance on X—“hello”—even Elon Musk marked the arrival of Apple’s new CEO.Elon Musk (elonmusk)⁴