I would like someone to answer these questions: Q. As fire os is based on android, I want to know if Google ads id is equivalent to Amazon ads id? Q. How does amazon id works on fire os? Q. Can we have both the amazon ad id and google ad id in fire os? Q. Areas in which both ids are similar and different? Q. And for devices with fire os < 5.XX, how to display ads on the app as amazon ads id was introduced in fire os 5.0? I have an app which is popular on google play store and now I am thinking to ship the same app on amazon store also, before doing so I want to be clear about the ad ids.