Confirming that the company selling you inventory has the publisher's permission to do so. In programmatic, this is not a given. Unauthorized resellers move inventory without publisher relationships all the time. Sellers.json and ads.txt exist specifically to close this gap. Buyers who skip verification are paying for inventory the publisher never authorized.
Ad tech glossary
Authorized Seller Verification
Technical definition
The process of confirming that inventory sellers have legitimate relationships with the publishers they claim to represent.
The ADLINGO translation
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Where this shows up
Guide: How Much Does Programmatic Really Cost?
Don't let fees and confusion burn a hole in your wallet. Like your morning coffee - it deserves a disproportionate amount of your time and attention.
🍿 The microwave popcorn of media
Bragging about agency programmatic capabilities is a flex as strong as bragging about how good you are at microwave popcorn.