Prebid.js grew out of a need for an improvement to the waterfall approach for advertising auctions. The waterfall approach was inefficient primarily due to sequential offering of inventory to demand partners. Prebid.js changed this process to a parallel auction where multiple demand partners are offered inventory at the same time. Pubwise offers a Header as a Service Platform, a Prebid Bid Adapter and uses a patented optimization process for Prebid.js called SPOT.
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