Ad impressions are traded on ad exchange platforms. Publishers enter their ad impressions into the supply-side platform, a technology platform that enables them to manage their advertising space. On the other hand, there’s the demand-side platform, which focuses on merchants’ requests.
Ad exchange: the term ‘ad exchange’ describes a marketplace where advertising stock (page impressions) are traded.
Supply-side platform (SSP): supply-side platforms are used by publishers to manage sales. Offers are organized and supplied here.
Demand-side platform (DSP): merchants and advertisers use demand-side platforms to relay their requests. DSPs use data from advertisers to organize and optimize demand.
Take the following scenario: a user visits a website whose publisher offers ad impressions through an ad exchange. The SSP and DSP then begin to communicate with one another.
- The SSP provides relevant information like the content categories for the advertising space, user ID for each impression, or additional data for targeting and re-targeting.
- The DSP checks this data and decides whether a campaign should be advertised and, if so, which one.
- The DSP then names a bid (on the advertiser’s behalf) for the relevant advertising space or ad impression.
- The SSP receives various bids and calculates the highest bidder (via RTB). The winning bid is then advertised.
- The user doesn’t notice any of the process, as it only lasts a few milliseconds.