An "Instance" is the AWS term for a virtual server in the cloud. For Frame accounts running on AWS, we use several different instance types, including:

Productivity workstation:  2 vCPUs (2.5GHz CPU with turbo mode up to 3.3 GHz plus burst-able performance) and 4 GB of RAM.  This AWS instance type is known as "t2.medium"

Graphics workstation: includes a powerful NVIDIA GPU (Kepler GK104 GPU with 1536 CUDA cores), 8 vCPUS (4 Intel Xeon CPU cores running at 2.6 GHz), and 16 GB of RAM.  This AWS instance type is known as a "g2.2xlarge"