Ad inventory that is unreserved, has auction based pricing and incorporates a one seller-to-all buyers type of participation. Other terms used in the market to describe Open Auction Digital Media Inventory are: Real-time Bidding (RTB), Open Exchange and Open Marketplace. Prioritization in the ad server, the Deal ID, Data usage, Transparency to buyer and pricing floors are factors to consider impacting to Invitation-Only Auction Digital Media Inventory.