[diafygi]

For everyone saying this ruins impression tracking, couldn't an ad-network just act as a "CDN" (e.g. client <-- Ad-CDN <-- server). They'd basically man-in-the-middle the server response and inject the ads into wherever in the html the server put the ad-tags. To the client, it would still be SSAI, but the Ad-CDN could still record impressions.

Not that any server owner should do this (giving over control of your website ultimately to the ad-network? fuck that), but as ad-tech becomes more desperate, shouldn't these types of MITM setups get pushed more?

[teddyh]

An “Ad-CDN” is exactly what AMP is.

[edmundsauto]

What if Cloudflare acting as a reverse proxy, that would really complicate things.