Advertising Cost of Sale (ACoS) is a common Amazon metric that reflects the actual expense of generating revenues from customer transactions due to advertising.

A UTM, or Urchin Tracking Module, is a code snippet that is added to a URL to track the performance of digital marketing campaigns.

CPM stands for "Cost per Mille" (also known as "Cost per Thousand"), which is a metric used in advertising to measure the cost of reaching one thousand impressions or views of an advertisement.