Hypervisor
A software layer used to run multiple operating systems concurrently on a single machine. It allows VMs to interact with the hardware without going through the host OS, providing a boost in efficiency with using system resources.
Hypervisors come in two types.
Type 1 (Native / Barebones)
This type runs directly on the computer's hardware to manage the guest VMs. Some Type 1 Hypervisors include:
- Microsoft Hyper-V Server
- VMware ESX
Type 2 (Software Manager)
This type is a software application that runs on top a conventional OS to manage the guest VMs. When a guest VM needs to access the host hardware, it does so through the hypervisor. Some Type 2 Hypervisors include:
- VMware Workstation
- Oracle VM VirtualBox
- Parallels Desktop for Mac
- QEMU OpenSource
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