Which type of ad inventory is bought and sold based on a set, negotiated CPM. December 20, 2018 By CertificationAnswers Which type of ad inventory is bought and sold based on a set, negotiated CPM. Enabled Reserve Auction Overage Related content Related posts:What is the difference between reserve and auction ads?How can the “Groups” feature help determine…What is a reserve ad?Which is true of reserve ads?
