Amazon VPC Network Access Analyzer is a new feature that enables you to identify unintended network access to your resources on AWS. Using Network Access Analyzer, you can verify whether network access for your Virtual Private Cloud (VPC) resources meets your security and compliance guidelines. With Network Access Analyzer, you can assess and identify improvements to your cloud security posture. Additionally, Network Access Analyzer makes it easier for you to demonstrate that your network meets certain regulatory requirements.
Source:: Amazon AWS