Amazon Ads now includes long term sales metrics in campaign reporting. These metrics, called Long term sales (LTS) and Long term sales ROAS (LTS ROAS), estimate the incremental sales value a brand can expect over the next 12 months. This estimation is based on how effectively advertising campaigns move new-to-brand shoppers down the purchase funnel. The calculation relies on the historical 12-month return from customer engagements such as detail page views, branded searches, add-to-carts, and purchases. A shopper is considered new to the brand if they have not completed a conversion with that brand in the past 12 months.
