What is "Response Rate"?
The Response Rate is the percentage of impressions that resulted in a unique visitor to the advertiser's website or mobile app. This is calculated by taking the number of estimated Attributed Unique Visitors and dividing it by the number of Impressions.
For example, if your Response Rate is 0.015%, that means that 0.015% of your impressions resulted in a Unique Visitor to your website.
Response Rate is different from Conversion Rate in regards to SmartAds. While Response Rate measures visits, Conversion Rate measures ultimate conversions like purchases or leads submitted.