Question: What does interoperability with third-party ad IDs allow advertisers to do?
- Enable using multiple audience types on a single line item
- Expand the supply they have access to and improve overlap rates
- Create custom audiences in one click
Explanation
Third-party ad IDs help connect addressability across eligible external supply sources used by Amazon DSP. This improves audience matching when Amazon Ads can recognize compatible identifiers from third-party environments. Better matching increases usable inventory for activation and can improve overlap between advertiser audiences and available supply. The function supports reach and activation efficiency, not audience creation or line item logic.
Why the other options are incorrect
Multiple audience types is incorrect because this relates to targeting configuration, not third-party identifier interoperability.
Custom audiences is incorrect because third-party ad ID interoperability does not create audiences in one click.
Source for verification
https://advertising.amazon.com/solutions/products/amazon-dsp
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