Flash is a product created by Adobe and has historically been used to play video on almost all PCs. Over the last few years things have been changing with the rise of HTML5 and Apples resistance to using Flash based products. It has often been assumed that Apple did not embrace Adobe Flash due to a fallout between Steve Jobs and the Adobe creators. This is not true and an article written by Steve before his very sad demise he states:-
I wanted to jot down some of our thoughts on Adobe’s Flash products so that customers and critics may better understand why we do not allow Flash on iPhones, iPods and iPads. Adobe has characterized our decision as being primarily business driven – they say we want to protect our App Store – but in reality it is based on technology issues. Adobe claims that we are a closed system, and that Flash is open, but in fact the opposite is true. Let me explain.