Reserved Inventory

When publishers reserve specific ad space on a website exclusively for specific advertisers, based on an agreed deal/price, this inventory becomes reserved inventory.

Reserved inventory is often a feature of programmatic guaranteed deals, and ads are served on a programmatic (automated) basis according to the terms of the deal.

Advertisers reserve inventory in advance for a range of reasons, such as to secure premium positions, to run time-sensitive campaigns, or to ensure ads appear alongside certain content.