https://arstechnica.com/gadgets/2019/04/amazon-and-google-settle-feud-bring-youtube-back-to-fire-tv-devices/

Feuding tech giants Amazon and Google have come to an agreement on their streaming services. After over a year of absence, the official YouTube app will return to Amazon Fire TV devices and Fire TV Edition smart TVs. Google pulled the video streaming app in early 2018 after it could not strike a deal with the online retail giant surrounding the availability of its products and services.