Most of the usefulness of this service is that you need a NAT gateway if you want instances to be created with private IPs only but also be able to access the internet.  The IPv4 point isn&#x27;t wrong but it misses the mark, I think.<p>You could put them in super restrictive security groups, sure, but some people just want to say &quot;these don&#x27;t have a public IP, so it checks off this box&quot; and those people are going to be super happy with this.<p>There&#x27;s also the comments about checking off other boxes like central points for IDS, etc.