Lumberyard is part of the Amazon Web Services (AWS) platform and, at the time of this book's publication, is still in beta. This is a free AAA game engine based on CryENGINE. Lumberyard's unique selling point is that no other game engine offers deep integration with Amazon Web Services and Twitch.
AAA, pronounced "triple-A," games are those with extremely large production and marketing budgets.
With this engine, you can develop for the following platforms:
- Android
- HTC Vive
- iOS
- Oculus Rift
- OSVR
- PC
- PlayStation 4
- PlayStation VR
- Xbox One
For further information on AWS Lumberyard, I recommend Learning AWS Lumberyard Game Development by Packt Publishing: https://www.packtpub.com/game-development/learning-aws-lumberyard-game-development.