Apple’s chief executive role will pass to John Ternus in September at a moment when the company is facing an unfamiliar strain: its standing in artificial intelligence is under scrutiny, and global supply chains have become markedly less resilient. The 50-year-old hardware engineer, who has spent 25 years at Apple, has been behind many of the company’s defining bets over the past decade—though largely out of the spotlight. For investors and employees alike, the coming transfer of power will amount to a test of whether Apple’s business model, built on engineering strength and operational discipline, can adapt to an industry being reshaped by generative AI. The company has lagged rivals in rolling out breakthrough AI features, leaving its incoming leader to confront not a question of continuity, but of whether to rethink the strategy that turned Apple into a $4 trillion corporation.
“The question is whether he is willing to make the bold, and at times uncomfortable, decisions required to build a new platform,” says Francisco Jeronimo, an analyst at IDC. “Building an AI platform that developers and enterprise customers genuinely embrace is an altogether different challenge.”
Colleagues describe Ternus as quiet and reserved, with a reputation for capable leadership that grew alongside the breadth of his responsibilities. “He has this sort of fatherly calm—just a genuinely pleasant guy,” says one former senior Apple executive. “What’s striking is that he formally belongs to the ‘old guard,’ and yet he is still relatively young.”
As head of hardware, Ternus oversaw Apple’s push into new devices as it sought to reduce its dependence on the iPhone, while also bringing to market products that broke with the company’s familiar annual cycle. He became the public face of that shift—from the “thin” iPhone Air unveiled late last year to the MacBook Neo, the company’s first attempt to enter the affordable laptop segment, announced last month.
Not every bet paid off. The iPhone Air, the most visible redesign of the smartphone in years, proved a commercial failure. Vision Pro, the headset that also fell under Ternus’s supervision, posted disappointing sales.
Yet, as one former colleague puts it, it is precisely Ternus’s engineering pedigree that may set him apart from his two predecessors: “from Steve Jobs’s focus on product storytelling and marketing, through Tim Cook’s operational excellence, to leadership deeply rooted in the engineering tradition.”
Cook had repeatedly signaled that his successor would come from within the company. His closest deputy, Jeff Williams, left Apple in November and later joined Disney’s board, effectively removing himself from contention. In the end, Ternus prevailed over other high-profile Apple executives, including software chief Craig Federighi and marketing chief Greg “Joz” Joswiak.
“Under [Ternus’s] leadership, the company will reach extraordinary heights,” Cook wrote in a Monday message to employees. “I cannot wait for you to know him as I do.”
“For a while, Craig Federighi may have seemed like the heir apparent, but in my view he bungled AI and Siri,” one former colleague says. “And at 56, he is already closer to retirement.” Another employee is more upbeat: “I believe in John as a leader. Choosing an insider is further proof that Apple understands just how poorly it integrates outside executives into its culture. In my view, he was the best internal candidate.”
The groundwork for Ternus was also being laid elsewhere in the organization: over the past year, Cook and Apple’s board refreshed the company’s upper ranks with a new generation of senior executives. Among them are chief financial officer Kevan Parekh, chief operating officer Sabih Khan, general counsel Jennifer Newstead, and AI chief Amar Subramanya.
Ternus himself is a California native and intensely private about his personal life. He joined Apple in 2001, shortly after graduating from the University of Pennsylvania with a degree in mechanical engineering. For his first 15 years at the company, he worked largely in the background, only stepping onto the stage at Apple’s annual developers conference for the first time in 2017—a kind of badge of distinction for rising figures inside the company.
His standing within Apple, colleagues say, was definitively cemented around 2020, when the company was pivoting away from Intel processors toward its own chips. Apple was betting that its silicon engineers could compete with an industrial giant while simultaneously moving its products onto a new architecture. The wager paid off: external costs fell, and control over its own hardware became complete. Ternus later described the transition as “one of the most profound changes in Apple—if not the most profound, at least in its products over the past 20 years.”
Another sign of continuity came in a separate Monday decision: Johny Srouji, the company’s longtime chief chip engineer, who alongside Ternus helped bring that strategy to life, was promoted to chief hardware officer. Late last year, Ternus was additionally given oversight of the software design teams—just ahead of the unveiling of a redesigned Siri, widely seen as a telling test of Apple’s ability to lead the AI market.
“If we do this right, people will not even notice it or stop to think about it,” Ternus said of Apple’s approach to AI in March. “They will simply get a new feature they use more and more—because they like it.”
Analysts, however, remain concerned by Apple’s lag behind rivals in developing AI software capable of reshaping its products and preserving its dominant position in personal devices. “The new Siri has to launch flawlessly—and it has to become something people actually want to use,” says Gene Munster of Deepwater Asset Management. “After that, he needs to start bringing in outside talent—from companies that were built around AI from the outset… Culturally, they need to show rank-and-file employees that the company is reinventing itself.”