Amazon instant video is one of the most popular video streaming services in the country. At last check it was second behind Netflix. Now how many people have the instant video service simply because they signed up for Prime for shipping and books, the company does not say. But regardless a consistent criticism of Apple TV has been that it does not have an Amazon Instant Video app. The thing is though that anybody with an iPhone 4s, iPad 4 or a number of iPhones can easily watch Amazon prime content on their Apple TV. This is because Apple TV supports AirPlay. With AirPlay users can launch virtually any app and watch it on TV. This is what the Chromecast was trying to copy in the first place. See the video for instructions on this method and learn how to watch Amazon Instant Video on Apple TV.