As a buyer, I want the first bid request to include IAB cohorts, signals, and synthetic ID #269
Description
Story
As a buyer,
I want the first bid request to include IAB cohorts, publisher signals, and the TS synthetic ID,
so that even before ID sync, I have meaningful data to inform my bidding and can initiate the sync process.
Parent Epic: #265
Acceptance Criteria
- Every bid request includes the TS synthetic ID (already implemented via
user.id) - If IAB audience taxonomy cohorts are available, they are included in the request
- If publisher-defined signals are available, they are included in the request
- This data is present regardless of whether a buyer ID mapping exists
Open Questions
- What is the source of IAB cohorts? (Publisher-provided? TS-computed? Third-party integration?)
- What signal format? (IAB Seller Defined Audiences? Custom key-values?)
- Where in the OpenRTB request should cohorts/signals go? (
user.data?site.content.data?)