Question: What should be included in a third-party tag to ensure accurate impression counting?
- A cache buster
- Conversion API
- A redirect URL
Explanation
A cache buster inserts a unique value into each impression request. This prevents browsers or servers from reusing a cached ad call instead of firing a new measurement request. In Amazon DSP, this helps third-party measurement systems count impressions accurately for each served ad. Without it, impression counts can be understated or inconsistent across reporting systems.
Why the other options are incorrect
Conversion API is incorrect because it is used for conversion event transfer, not impression-request uniqueness.
Redirect URL is incorrect because it routes click or ad-serving traffic but does not prevent cached impression calls.
Source for verification
https://advertising.amazon.com/resources/ad-policy/technical-guidelines
https://advertising.amazon.com/resources/ad-policy/approved-3p-ad-servers
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