So funktioniert Onlinewerbung

In 9/1000 einer Sekunde entscheidet sich bei jedem Seitenaufruf welche Werbung ein User zu sehen bekommt.

Say you load a YouTube video on your smartphone. An ad often pops up first. But before it does, there’s a tiny pause. And during that pause, “in nine-one thousandths of a second, there’s a mini bidding war that takes place to see who’s going to win that impression,” says Kenny Day, who runs political ad sales for Yahoo! and is a veteran of the ad tech business. Day is describing what’s known as real-time bidding. (…) But ad tech really took off when the power of buying and selling in a fraction of a second was combined with the mounds of data companies collect on consumers.

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