An advertiser wants to measure how well an AMC audience drives purchases in Amazon DSP. What is the best practice for setting up and analyzing this audience's performance?

Amazon Marketing Cloud audience performance should be measured with a clean line-item structure. Applying one AMC audience per Amazon DSP line item helps isolate the audience effect on purchase behavior. The Audience Report can then compare purchase rates across audiences without mixing multiple audience signals in the same line item. This setup produces clearer optimization guidance for future DSP activation.