Steve Jobs believed the PC was a closed system dominated by Microsoft and the Mac was an open system. The iPod, iPhone, and iPad expanded Apple's ecosystem beyond the Mac. iTunes allowed people to access their digital media from any Apple device and iCloud continued pushing this integration. The document outlines Apple's transition from the Mac to a broader ecosystem and the key products that drove this change like the iPod, iPhone and iPad which expanded beyond the Mac into new markets like music players, phones and tablets.