The main use cases for VMware Cloud Foundation are that it combines VMware and Azure, Windows, and all things at the cloud level. Azure is one of the applications I am using. Some Azure levels also direct Windows servers, as some Windows servers I have moved from VMware to Azure. The Azure portal operates at different levels.
I am using Azure 109, 019 as a fundamental level for on-premises infrastructure, PSS, IAS, and other Azure foundation components.
I utilize the workload portability feature in VMware Cloud Foundation, and the workload balance is effective. For example, in one cluster level, there are four to five ESXi hosts. Each ESXi host has minimum resources including CPU and memory allocations. At the VMware Cloud Foundation level, utilization is considerably lower.
The deployment model of VMware Cloud Foundation is implemented through one tool, though I cannot recall its exact name. Currently, my environment uses that tool to move applications from VMware to Azure.