Watching HBO on Amazon Prime Video Channels
Amazon Prime Video offers HBO as a paid, standalone channel for Amazon Prime members. To try a free trial of HBO through Prime Video, go to amazon.com/HBO (7-day free trial, then $14.99/month). The HBO channel on Prime Video Channels gives you unlimited, on-demand access to HBO's current and past programming (the same great content available through HBO GO and HBO NOW).
Once you subscribe through Prime Video Channels, you can stream HBO using the Prime Video or HBO NOW app. For more info, go to Prime Video Channels: How to stream HBO.