Jacqui Cheng of Ars Technica:
Over the last year, four important Apple executives left the company. One of those execs was hired and fired within that year. Another chose to retire, only to take a few steps back several months later. We thought we’d take a look at these four and what roles they played within the Apple ecosystem to see what all the fuss was about — for better or for worse.
2012 was a big year internally at Apple, but these changes are setting them up for a very solid 2013.