While his predecessor, Steve Jobs, is recognized for launching the MacBook, iPhone, and iMac, Tim Cook’s notable breakthroughs are seen in Apple’s operations, supply chain, and profit margins.  For instance, during Cook’s first year at Apple, he helped the company reach profitability after a $1 billion net loss in the previous year. After transforming the company’s supply chain, Apple’s inventory turnover went from months to five days. Apple’s margins have also remained healthy during Cook’s tenure. Most recently, Cook oversaw the launch of Apple’s M1 processors, driving greater vertical integration in the company’s supply chain. After 14 years, Apple ditched Intel’s chips for M1 processors that generated longer battery life and power efficiency.