LONDON, U.K.: Apple has named longtime executive John Ternus as its next chief executive, marking a leadership shift at a critical moment as the company grapples with intensifying competition in artificial intelligence and mounting geopolitical pressures.

Ternus, 50, will take over in September from Tim Cook, who led the iPhone maker for 15 years following the death of co-founder Steve Jobs and oversaw its rise into a US$4 trillion technology giant.

A company veteran who joined Apple 25 years ago, Ternus has spent much of his career in hardware engineering and, most recently, has overseen the development of key products, including the iPhone, iPad, and Mac. His appointment signals continuity, but also places him at the center of challenges that extend beyond his traditional expertise.

He will be expected to steer Apple through an evolving technology landscape, particularly as the company seeks to strengthen its position in artificial intelligence after lagging behind rivals.

"The challenge for the new CEO is really to make sure Apple is able to crack AI as the new user interface and reinvent human-machine interaction," Forrester Research analyst Thomas Husson said.

Apple's efforts in AI have stumbled in recent years, despite earlier promises to roll out advanced features. The company has also turned to Google, a leader in the field, to enhance its Siri virtual assistant, raising questions about how much it will rely on external platforms versus building its own capabilities.

"A big strategic question is how far Apple will invest in building its own AI platform versus relying on other companies' models and platforms," said Ben Wood, chief analyst at CCS Insight.

Ternus has played a role in developing several of Apple's flagship products under Cook, including the Apple Watch, AirPods, and Apple Vision Pro. He was also involved in the MacBook Neo, which Wood described as "arguably one of the most disruptive products" Apple has launched in recent years.

"This mentorship will undoubtedly ensure a smooth transition, and initially, I expect very few changes to the company's strategy," Wood said.

Cook endorsed his successor in Apple's leadership announcement, calling Ternus "without question the right person to lead Apple into the future."

The transition comes at a sensitive time for Apple, based in Cupertino, California. Beyond technological challenges, the company faces supply chain uncertainties stemming from global tensions, including the war in the Middle East, as well as its ongoing reliance on manufacturing in China.

"The consumer electronics industry faces a perfect storm, with memory chip shortages and the war in the Middle East having widespread implications for consumer confidence. Apple will also need to decide how much it wants to continue its deep reliance on China for manufacturing," Wood said.

Ternus will also need to manage relationships with political leaders. Cook cultivated close ties with U.S. President Donald Trump during his tenure, helping the company navigate tariffs and trade tensions affecting its Asia-based supply chains.

Trump referenced that relationship in a social media post, writing that "it began with a phone call" early in his presidency when Cook sought help with "a fairly large problem that only I, as President, could fix." "That was the beginning of a long and very nice relationship," Trump said.

Unlike Cook, Ternus has largely stayed out of the public eye. Before joining Apple in 2001, he worked as a mechanical engineer at Virtual Research Systems. He later graduated from the University of Pennsylvania, where he developed a mechanical feeding arm for quadriplegics as part of his senior project.

In a 2024 commencement speech, Ternus reflected on his early days at Apple, saying he initially felt out of place.

"There will always be new skills to master and new people to learn from," he said.

Ternus said in Apple's announcement that he was "humbled to step into this role, and I promise to lead with the values and vision that have come to define this special place for half a century."