What Tim Cook built

Apple's Tim Cook is stepping down as CEO in September after 15 years, with product executive John Ternus taking over while Cook transitions to executive chairman. While Cook leaves behind a financially robust, operationally optimized company with strong services revenue, the transition raises critical questions about whether Ternus can maintain momentum amid global economic volatility, geopolitical complexity, and AI-driven business disruption—particularly given Cook's unique operational mastery that fundamentally reshaped supply chain economics industry-wide. IT leaders should recognize that leadership transitions at scale-setting companies like Apple ripple through enterprise technology ecosystems, affecting vendor strategies, platform dependencies, and strategic technology roadmaps.