An ad exchange is a digital marketplace that enables advertisers and publishers to buy and sell advertising space, often through real-time auctions. They’re most often used to sell display, video and mobile ad inventory.
The major ad exchanges include:
- AppNexus Wiki
- AOL‘s Marketplace (ONE by AOL)
- Spotx Developer Center
- OpenX (company)
- Rubicon Project Exchange
- Smaato Video Library