Facebook eCPM: The first (and only) thing you need to know

It’s common knowledge that when we advertise on Facebook we must win an ads auction outbidding other advertisers aiming to show their ads to the same potential customers of ours. Of a minor knowledge, and paramount importance though, is the process that Facebook deploys to determine which of the plethora of available ads we are exposed to, are to be shown at the right time, in the right…