title: List of AWS services that don’t require a VPC to run
body: <p>Google failed me again or may be I wasnt too clear in my question. 
  Is there an easy way or rather how do we determine what services are VPC bound and what services are non-vpc ? 
  For example - EC2, RDS require a VPC setup 
  Lambda, S3 are publicly available services and doesn't need a VPC setup.</p>