It is possible to use multiple virtualization technologies simultaneously under Linux, but there are some considerations to keep in mind.
One option is to use hardware-assisted virtualization, which allows multiple virtual machines (VMs) to run on a single physical host. This can be done using a hypervisor, such as VMware ESXi or KVM, which allows multiple VMs to share the physical resources of the host. However, each VM will still be isolated from the other VMs and will not be able to access the host system directly.
Another option is to use multiple virtualization technologies on the same physical host, but each technology would need to be run in a separate VM. For example, you could run VMware Workstation in one VM and VirtualBox in another VM on the same physical host. However, this would require a significant amount of resources and may not be practical for most use cases.
It is also possible to use containerization technologies, such as Docker or LXC, alongside hardware-assisted virtualization or other virtualization technologies. Containers provide a lightweight way to package and run applications in an isolated environment, and they can be used alongside VMs or on their own.
Overall, it is possible to use multiple virtualization technologies simultaneously under Linux, but it may require a significant amount of resources and careful planning to ensure that the different technologies are properly configured and optimized to work together.