I’m taking a class on data privacy at the moment, and it made me think it would be interesting to see exactly what kind of advertising data has been generated by services like Google \ YouTube \ Etc. Is there somewhere online that’s easy to punch in an advertising ID & find that sort of data, or is that something you’d have to request from advertisers themselves? (AdSense etc?) Or maybe do the service providers (mentioned before) store that data?

Forgive my ignorance - still learning about this stuff!