Tim Cook's career as Apple CEO can be mapped through his best WWDC announcements. As he steps down, he's reflecting on his legacy, with WWDC appearances from 2012 to 2026 being his most high-profile moments. His trademark 'good morning' became iconic, but these events also unveiled pivotal Apple milestones.

From iOS 7 and Liquid Glass to the failed Mac Pro and the success of Apple Silicon, Cook's keynotes marked both triumphs and trials. In 2012, his first WWDC keynote followed the iPhone 4S launch, where he seamlessly took over from Steve Jobs with familiar confidence. 2013 saw the end of cat-named OS X versions, the launch of iOS 7's radical redesign, and the controversial Mac Pro overhaul. The most somber moment came in 2016, when Cook opened WWDC with a moment of silence for the Orlando, Florida shooting tragedy, showing a rare emotional depth as he led the audience in remembrance before the keynote began.