You may want to check out FittedCloud (www.fittedcloud.com). It identifies potential cost savings opportunities using machine learning and provide optimization

You may want to check out FittedCloud (www.fittedcloud.com). It identifies potential cost savings opportunities using machine learning and provide optimization recommendations in form of actionable advisories for most of the AWS resources. Actionable advisories are one click to automation for the provided recommendation. They have a free version with limited capabilities and a paid version for full capabilities.