How do we embed tags in turtle dove model within fenced frames which return dynamic data from an ad-server

[taransaini43]

Hi team,

Currently, we have an ad-server which gets invoked by the relevant ad tag as trafficked on the DSP side. With the Turtledove proposal, it appears the browser will seek a static web bundle from the ad-network mentioned on the advertiser site and use the same to render the ad based on user interest group and the winning bid between contextual and behavioural ad.

How do we fit the ad tag model here which can call a remote server and return dynamic elements (based on say interest group)? Is it even possible? If not, even if we were to send back static bundles from an ad tag(for a specific interest group), where will we embed the tag in the new model as the fenced frame is not supposed to make any outbound calls.
Apologies if this is not the right place to post this query (kindly route me to the right channel where I can find some answers)

[shivanigithub]

Thanks for the issue!
Since this is a protected audience issue, it will be better to create the issue under https://github.com/WICG/turtledove/issues