When Tim Cook became the CEO of Apple in 2011, critics called him “boring” and a “loser”. Fifteen years later, his era at Apple may be winding down, but he is leaving as the most successful CEO in the company’s history. And the numbers don’t lie: from a $350 billion company in the 2010s to a $4 trillion one today, Apple has come a long way under Cook. While he may not have had Steve Jobs’s charisma, Apple’s financial success under his leadership is undeniable. However, Cook’s contribution as CEO goes beyond financial success. Along the way, the iPhone became a symbol of American tech dominance, and the Apple Watch evolved into a powerful health tool. While the company may have become less surprising over time, Cook’s leadership has delivered many hits – as well as some failed products. I have been covering Apple since the 2010s, have seen Cook’s leadership up close, have reviewed every Apple product released under his leadership, and have witnessed his highs and lows as CEO.…