Why does header bidding cause latency? How can we reduce it?
Having seen almost all bidders’ header bidding API calls, we’ve observed the few problems listed below:
The first two scenarios show websites’ network calls after implementing header bidding.
The final scenario shows how header bidding is accelerated by Prebid.js.
All Pre-bid Calls are made concurrently within 100ms: Note that AppNexus, Pubmatic, OpenX, Rubicon bidding header calls were all made within the first 100ms.
The timeout of 400ms is respected: We set the timeout to 400ms. As you can see from the graph, the GPT tag (