Ad Manager
is a powerful platform for managing your ads. It gives the opportunity to use different instruments for the inventory monetization, including Google Ad Exchange (AdX).
AdSense
Simple way to monetize your inventory. AdSense works by matching ads for your site based on your content and visitors.
Open Bidding
is an additional exclusive Google product. It allows to add other third-party exchanges competing for inventory in a real-time auction.
Ad Exchange
Google AdX is a real-time marketplace which includes Ad Sense advertisers and Ad Networks agencies. All the buyers are competing in real-time auction buying the impression on your site.