An over provisioned EC2 instance is under utilised and could be downsized to a smaller instance type.
This recommendation depends on the Amazon Compute Optimizer, https://aws.amazon.com/compute-optimizer/ (opens new window), which must be opted-in on your account.
- Visit the getting started page from Amazon, https://aws.amazon.com/compute-optimizer/getting-started/ (opens new window), to enable compute optimizer.