CTV publishers: from one app to many buyers

Mistake. Letting your TV platform sell ad breaks buyers can’t verify.

Inventory sharing means another company, often your TV platform, sells part of your ad time.

Take CTV.example, a free streaming app. Its TV platform sells three of every ten ad slots. Your own SSPs sell the rest, listed in your app-ads.txt. A buyer’s DSP sees a request from the platform’s seller account. That seller isn’t in your file, so it looks unauthorized, and strict buyers skip it. The fix is one line, inventory partner domain, equals the platform’s domain. Your ad request passes it too, so the buyer checks the platform’s ads.txt. Some DSPs don’t read it yet, so keep your reseller lines.

List every company selling your ad breaks. Each needs an app-ads.txt line, or a partner declaration.

Next, app developers, from AdMob alone to in-app bidding.