What Tim Cook built

Apple's CEO, Tim Cook, will step down from the role in September after 15 years. Cook took over from Steve Jobs in 2011 and has overseen significant changes at the company. Incoming CEO John Ternus will face challenges, with some analysts noting that Cook's focus on operations has contributed to the company's success. Apple's decisions have a ripple effect on other companies, with many startups relying on the iOS platform.