There's a lot more (Axciom, Neustar, etc.). Just check out one of these Lumascapes--the data companies are slightly off to the right near the top in the DB Mar

There's a lot more (Axciom, Neustar, etc.). Just check out one of these Lumascapes--the data companies are slightly off to the right near the top in the DB Marketing, DMP and Marketing Data sections [1]. Advertisers and publishers can also sell this data directly on exchanges (a relatively new thing) like Adobe's Audience Marketplace [2]. [1] http://www.lumapartners.com/lumascapes/marketing-technology-lumascape/ http://www.lumapartners.com/lumascapes/marketing-technology-... [2] https://blogs.adobe.com/digitalmarketing/advertising/source-sell-and-swap-audiences-with-ease-using-adobe-audience-manager/ https://blogs.adobe.com/digitalmarketing/advertising/source-...