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Apple has confirmed that Tim Cook will transition to executive chairman, with John Ternus set to take over as CEO from September 1, 2026. While there were strong rumours about his retirement this year, the announcement is still head-turning to the tech industry as it closes a 15-year chapter that reshaped Apple from a product-led innovator into a scale-driven, services-heavy, globally dominant business. Cook stepped in as CEO in 2011, following Steve Jobs, at a time when Apple’s identity was closely tied to Jobs’ product vision, which involved taking bold risks and thinking differently. Cook’s approach was arguably in contrast to this. He stabilised operations and mainly focused on scaling what already worked. This meant more predictable product cycles, and for the company, it resulted in steady, compounding growth.
Under Cook’s tenure, Apple expanded into new categories, largely thanks to his mastery of global supply chains, financial optimisation, and operational discipline. And several defining moments capture both the gains and gaps of his leadership. Here are some of them:
Cook’s background in operations became a defining strength. Apple refined its global manufacturing and logistics to deliver products like the iPhone at a massive scale with consistent quality. Under Cook’s leadership, China became the backbone of Apple’s manufacturing, which has acted as both the company’s strength and long-term risk. In the book Apple in China by Patrick McGee, the author points out that Apple’s operations helped accelerate China’s own tech capabilities and manufacturing ecosystem. Meanwhile, Apple is now heavily dependent on China for its supply chain efficiency.
This efficiency is Apple’s biggest competitive advantage, but it will have to find alternatives.
The introduction of the Apple Watch in 2015 marked Apple’s first major new category under Cook. Initially, it was positioned as a fashion-tech and failed to define its function and focus. But, over time, it evolved into the world’s most popular health and fitness wearable. It is now a practical part of the Apple ecosystem due to its value offering in health tracking, safety features and integration with iPhone.
On the other hand, the removal of the headphone jack from iPhones, followed by the launch of AirPods, kind of created the wireless audio category. It was also initially criticised for design and pricing, but AirPods are now valued for their everyday convenience, seamless pairing, and ecosystem features. This category became a mass-market success and drove Apple’s wearables business into a multi-billion-dollar segment.
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Under Cook’s leadership, Apple aggressively expanded services such as Apple Music, Apple TV+, iCloud, and Apple Fitness+. So, Apple is no longer just a hardware-centric brand; rather, it has a hybrid model with recurring revenue. Even if hardware growth slows, services are there to stabilise things. For Apple users, this made the Apple ecosystem more useful with connected services that handle music, storage, fitness, payments, and entertainment. They don’t have to rely on third-party services. But this also means ecosystem lock-in. They are locked in the Apple walled garden, and may also suffer from growing subscription fatigue.
Apple started moving from Intel processors to its own chips, with the M1 silicon in 2020. The in-house chips benefit from vertical integration and offer improved performance, battery life, and efficiency. This has reshaped the Mac lineup and is now a benchmark for the competition.
Apple’s long-rumoured electric vehicle project was eventually shelved after years of development. This is one of Cook’s most visible failures in terms of resource allocation. It highlighted Apple’s difficulty in entering highly complex, capital-intensive industries outside its core strengths. For observers, it reinforced the idea that Apple under Cook prefers controlled expansion rather than high-risk bets.
And some other bets haven’t really paid off yet.
Apple Vision Pro was one of the most ambitious product bets of Cook’s era. It launched in 2024 and was positioned as a spatial computing device that blends augmented and virtual reality. While it is technologically advanced, it is also extremely expensive and niche. So, the initial fanfare died down, and Apple hasn’t openly announced a successor. The bigger question is long-term adoption. And the industry wonders what’s going to be the next big thing from Apple that reflects both Apple’s ambition and high-end approach to new categories.
Then there is Apple Intelligence. Apple has taken a relatively measured approach to artificial intelligence (AI) compared to rivals. While it has integrated AI features across devices, Apple Intelligence is not as refined or useful (yet) as some of its rivals. This has led to the criticism that Apple is being reactive and not proactively innovating in this space.
At the same time, its focus on on-device processing and privacy shows a different strategic direction, prioritising user trust over rapid feature rollout.
Apple introduced more accessible products like the iPhone SE series, the iPhone e-series and the MacBook Neo to reach a wider audience. This move helps Apple tap into emerging markets. Consumers get entry into the Apple ecosystem at relatively lower prices. But, this also means the products may lack in design and features.
Despite being competitors, Apple has maintained key partnerships, including with Google for search and services integration. These deals show how Apple is prioritising revenue and user experience over rivalry. It also reflects how interconnected the tech ecosystem and, especially, the big players are.
In a similar vein, in recent years, we have seen how Cook’s team has navigated complex global politics while gradually shifting parts of Apple’s manufacturing from China to countries like India. This diversification reduces risk and goes with changing trade dynamics. In time, we will see how it fares for the company and markets like ours.
Under Cook, Apple’s market value has grown from around $350 billion to roughly $4 trillion. The revenue has also nearly quadrupled, and its installed base has crossed 2.5 billion active devices. This scale means Apple is one of the most influential companies out there. And as for its users, this could mean stronger ecosystem integration, longer software support, and a broader services network.
In many Apple keynotes, we get to hear Cook and the team emphasising values such as privacy, accessibility, and environmental responsibility. Apple claims to have reduced its carbon footprint significantly. Time and again, Apple has championed itself as the protector of privacy and positions data privacy and security as a core feature of the Apple ecosystem.
However, this also reflects how the brand has shifted from a design-first culture to a scale-first organisation. Some may find it more corporate and less interesting. Apple has also faced sharper scrutiny over how it complies with Chinese laws on labour practices and user data, which shows conflict in its business priorities and ethical expectations.
Still and all, Tim Cook’s tenure is broadly defined by business execution. He turned Apple into a highly efficient and financially dominant company. Its users got reliable products, better ecosystem integration, and long-term support.
As Cook moves into the chairman role and Ternus prepares to take over, Apple enters a new phase. We’ll see how globally resilient the company is in a changing political climate. The next chapter will likely be judged on whether it can balance Cook’s operational strength with a renewed push for breakthrough innovation.
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Also Read: Top 10 quotes from Tim Cook during his time as Apple CEO