https://www.theregister.co.uk/2018/11/27/amazon_aws_a1/

Amazon has designed its own Arm server processors, dubbed Graviton, and is right now renting them out on AWS.

Just in time for this re:Invent conference in Las Vegas, the web giant today revealed its A1 family of EC2 instances, ranging from 1 vCPU, 2GB of RAM, up to 3.5Gbps EBS and 10Gbps network bandwidth, costing $0.0255 per hour on-demand, up to 16 vCPUs and 32GB of RAM, costing $0.408 per hour.