Tim Cook Steps Down After 15 Years As Apple CEO, John Ternus To Take Charge

Apple is preparing for a significant leadership transition, as Tim Cook plans to leave the chief executive role in September. Long-time hardware leader John Ternus will become CEO on 1 September, taking charge of the $4 trillion company. Cook will not exit the company fully and will instead move into the position of executive chairman.

Cook first became CEO in 2011 after Steve Jobs stepped down during a period of uncertainty. Over more than a decade, Apple's market valuation increased by over $3.6 trillion. Cook described leading the company as "the greatest privilege of my life", signalling the close of a defining chapter for the technology group.

Apple leadership transition and John Ternus' product background

The choice of John Ternus suggests a different emphasis for Apple's leadership transition. Ternus, aged 50, has worked at Apple for around 25 years. As senior vice-president of hardware engineering, Ternus has helped direct the development of the iPhone, Mac and other major devices, including the Vision Pro headset, across almost every major hardware line.

Under Ternus, Apple is expected to place even greater weight on hardware and product engineering. The leadership transition arrives as Apple faces questions about its progress in artificial intelligence. Rivals such as Google and OpenAI are moving quickly with new AI systems, creating pressure on Apple to show clearer plans in this area.

Apple leadership transition, AI strategy and services growth

To respond to this pressure, Apple has begun working with external partners on AI technology. The company is integrating advanced AI tools into its ecosystem, seeking to improve services and software across devices. This approach may continue under Ternus, combining Apple's hardware strengths with outside expertise in AI development and deployment.

Cook's time as CEO changed Apple's position in the global technology industry. After joining in 1998, Cook first built a reputation by managing Apple's complex supply chain. As CEO, Cook expanded the business beyond the iPhone, building services and launching products such as AirPods and the Apple Watch, while guiding Apple past the $1 trillion valuation mark and later to $4 trillion.

Despite these financial gains, some analysts argued that Apple under Cook did not match the iPhone's level of breakthrough innovation. They viewed Cook as strong in scaling and refining existing ideas rather than introducing a product of similar impact. With Ternus now preparing to take over, attention will focus on whether Apple's leadership transition delivers fresh momentum in both hardware and AI.