Home » Amazon Sponsored Ads Foundations » Which of the following ACOS indicates the more efficient advertising campaign? Which of the following ACOS indicates the more efficient advertising campaign? by Advertisement 5shares Facebook LinkedIn Pinterest Twitter Email 50% 35% 12% 95% Join our listSubscribe to our mailing list and get interesting stuff and updates to your email inbox. Thank you for subscribing.Something went wrong.We respect your privacy and take protecting it seriously