Direct Buy

This is an ad-buying system wherein the media buyer is in direct contact with a publisherThe individual or entity that promotes in exchange for payment, such as an affiliate in a CPA network or a traffic provider in an ad network. and purchases ad inventory in bulk. Instead of passing through a bidding system, the media buyer pays for the ad space at either a fixed CPM rate or a fixed schedule (with start and end dates). Under such circumstances, the media buyer has no option of filtering low-quality traffic since he gets the entire bulk of impressions for his ad space of choice. However, this can be a cheaper option compared to purchasing traffic from an ad network.