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John Ternus officially becomes Apple (AAPL) chief executive today, and the transition has put Cook's record under a lens that extends well past revenue charts.
The piece of that record most likely to define his reputation is Apple's choice to build its AI ambitions partly around external models rather than a frontier-model business of its own, with Google supplying some of the most important capabilities.
Whether that was the right call is still forming.
The growth record and the services layer On growth, Cook more than quadrupled Apple's annual revenue over his tenure and grew the company's market capitalization to more than $4 trillion.
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