Alright, let's see the next senten-
>It's about proving to advertisement customers that their ads were seen and were useful.
So, it's about making sure that the ads that they showed me were personalized enough that they accurately target me. Ads that are built to be efficient because they create a need from a very small part in me that can normally be reasoned with. Or attack some deep seated fears to make me purchase their magic fat loss pills, that they accurately targeted because of attribution, and because of being repeatedly told how effective their blasts are.
So it's about personalization, got it.
The pitch of modern advertising certainly seems to be 'more personalised ads are the only way to be effective'. And within that pitch, attribution is about finding out if the way an ad was personalized was indeed effective. But I am not sure I trust google and facebook when they claim "only personalized ads are effective".