Tim Cook is out as Apple CEO. He gave a 15-year masterclass in succeeding a legend.

Tim Cook's final day as Apple CEO was on Monday, August 30. Fabrice COFFRINI / AFP via Getty Images Tim Cook's transformational tenure as Apple CEO came to an end this week. He succeeded as Steve Jobs' successor by combining his strengths and judgment with Jobs' values. After 15 years in the role, Cook has made way for John Ternus. Tim Cook has stepped down as Apple CEO, marking the end of one of the greatest tenures in business history. Cook took on the daunting task of succeeding Steve…