
A hybrid auction: the right bidders on each side
Bidders that depend on browser cookies, or that answer fast from the browser, stay client-side. Bidders that add latency on the page, or match well server to server, move to Prebid Server. Both compete in the same auction.
- Server-side requests get a slightly shorter timeout than the page, so their bids arrive in time
- Moving a bidder between client and server doesn't touch your pages
- Cookie syncing runs from the browser and server to server











