Ad Inventory
The total amount of space available on a website or app for advertisements to be shown.
Ad Inventory represents the “real estate” a publisher has available to sell to advertisers. It can be measured in terms of impressions, page views, or specific ad slots.
Types of Ad Inventory
- Premium Inventory: Highly visible placements (like the header or homepage) that fetch higher prices.
- Remnant Inventory: Space that hasn’t been sold through direct deals and is usually filled via programmatic auctions at lower rates.
- Video Inventory: Specific slots reserved for video advertisements, which typically have higher eCPMs.
How to manage inventory
Publishers use Ad Servers to manage where and when ads appear. Effective inventory management involves balancing user experience with revenue maximization—showing enough ads to earn money without cluttering the site or slowing down page loads.
Inventory metrics
- Total Impressions: The sum of all ad opportunities.
- Sold Impressions: The number of opportunities actually filled by an ad.
- Unsold (Wasted) Inventory: Ad requests that went unfilled.
Monetise your website without the clutter
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Related Terms
Ad Impression
A metric used to quantify the number of times an advertisement is fetched and displayed on a screen.
Fill Rate
The percentage of ad requests that were successfully answered with a displayed advertisement.
Programmatic Advertising
The automated buying and selling of online advertising space in real-time.
Viewability
A metric that tracks whether an ad was actually seen by a user, rather than just being loaded.