title: How to find unused VPC in AWS account
body: <p>Is there any way to find unused VPCs in an AWS account?</p>
  
  <p>I mean the VPCs that don't have any EC2 instances, RDS and other services associated with it.</p>
  
  <p>One way is to just search with VPC ID in running instances, RDS and for other services to find out whether it is in use or not. Is there any other way or AWS CLI to find unused VPCs?</p>