Frustrated by a lack of research on the effectiveness of online advertising, DoubleClick Chief Executive Kevin Ryan recently decided to start compiling some of his own. His solution: Diameter, a ...

Google’s $3 billion acquisition of the DoubleClick ad server business in 2007 was a massive home run. But today, privacy regulations and changes to digital advertising have transformed Google’s ad ...

Less than a month after closing its DoubleClick acquisition, Google on Wednesday announced significant but expected changes in the ad services company that include reducing its staff and selling part ...