According to The Rundown AI, Apple has replaced its AI chief in a significant leadership shakeup aimed at revitalizing the company's artificial intelligence strategy and boosting Siri's performance (source: The Rundown AI, Dec 2, 2025). This change highlights Apple's intent to accelerate AI innovation, address competitive pressures, and capture emerging opportunities in generative AI and voice assistant technologies. The move comes as tech giants intensify their focus on practical AI applications, with market implications for enterprise AI, consumer devices, and software ecosystems.