What it is
VCF Automation is the self-service layer over the platform: a catalogue people draw virtual machines, networks or Kubernetes namespaces from, with approval, an expiry date and teardown. Until VCF 9 it was called Aria Automation.
When it is worth it
For environments where the same request keeps arriving. A handful of VMs a month does not justify the build; a development team creating and discarding environments daily does.