This quote by Steve Jobs, "It Just Works," sums up the long winning streak that Apple had from when Jobs came back to Apple until he unfortunately passed away. During that time Steve and teams delivered innovation after innovation and continued with wins like OS X and iOS from a digital media standpoint, not to mention some underrated killer work like Aperture and Final Cut. But do you know what I never heard? What methodology Apple uses. I also never heard how many people are on each of their teams. And I never heard about their team agreements. Matter-of-fact, all I know is that when I get a product, it just worked; it did what I needed it to do, and if there were bugs they got fixed.