3 Ways to Optimize Ad Inventory for Sales Following sharp declines during Covid restrictions in 2020, global advertising spending increased by 32% in the first half of 2021 and should remain above 23% for the total year tally. With spending on the rise, ad inventory management has a crucial role to play in publisher sales success in 2022. For publishers, optimizing ad inventory means quantifying the value of your ad spaces as accurately as possible, neither above nor below what