One of the key use cases is certifications for SOX applications. Another is centralized onboarding and offboarding. Another use case is the Self Service using the IT Shop, which gives us a repository of entitlements that people can request and then have the approval workflows, and document the approvals for SOX and other regulatory requirements.
The appliances we use for this solution are VMs. We went with that version because we're forced to. We're not allowed to use physical hardware. Our infrastructure group requires us to use VMs.