DSP or Demand Side Platform
A system that provides the technology for advertisers to purchase ad space through a real-time bidding auction. Essentially, if you are wanting to promote a display ad, you could use a DSP to get your ad on a third-party website. When a user reaches that website, the DSP technology will analyze the user’s demographics, interests, and hobbies (all collected through the cookies on their computer), compare that with the advertiser’s bids, and make a real-time decision on who wins that ad placement. DSPs algorithm will combine ad relevancy and interest with bid strategy to determine which advertiser ends up on top.