These are called conversion pixels, Google Analytics should have nothing to do with it (assuming there is a Chinese wall between AdWords, Doubleclick, GDN and G

These are called conversion pixels, Google Analytics should have nothing to do with it (assuming there is a Chinese wall between AdWords, Doubleclick, GDN and Google Analytics.) Obviously Google offers some built-in integration within its products but you can achieve this within the ad-buying platform itself.