Inventory is the advertising space of a publisher.
It is the space (collection of ad unit) on a website or app where ads are displayed.
In most businesses, inventory refers to products for sale. But for websites, inventory refers to the designated ad space available to sell to advertisers.
The inventory define all the available ad spaces across a site.v
Placement: National news
Ad unit: Local New York news
Key-value: Position is Leaderboard (pos=leaderboard)
Key-value: Position is Top Box (pos=atf-box)
Key-value: Position is Bottom Box (pos=btf-box)
Ad unit: Local Chicago news
Key-value: Position is Leaderboard (pos=leaderboard)
Key-value: Position is Top Box (pos=atf-box)
Key-value: Position is Bottom Box (pos=btf-box)
Ad unit: Local San Francisco news
Key-value: Position is Leaderboard (pos=leaderboard)
Key-value: Position is Top Box (pos=atf-box)
Key-value: Position is Bottom Box (pos=btf-box)
where:
Ad units have a “parent-child” relationship, meaning that ads targeting the top-level ad unit (the parent) can also target the lower-level ad units (the children).
The hierarchy should mirror the organization of the site’s content.
Example:
A ad for sport can be shown on the children
See Advertising - Inventory Fill Rate
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