Starting today, Amazon EC2 C6gd and R6gd instances powered by AWS Graviton2 processors are available in the AWS GovCloud (US-West) Region. These instances are powered by AWS Graviton2 processors and are built on the AWS Nitro System. The Nitro System is a collection of AWS designed hardware and software innovations that enables the delivery of efficient, flexible, and secure cloud services with isolated multi-tenancy, private networking, and fast local storage.
Source:: Amazon AWS