The virtual machine (VM) is simply an app that runs on the Mac just like any other Mac app. VMware Fusion to create a ‘virtual machine’ that runs within macOS itself.
Instead of splitting your hard drive into separate partitions for macOS and Windows, you use a virtualisation program such as This is where the other option, known as virtualisation, can come in handy. The only disadvantage of Boot Camp is that you lose access to all your normal Mac apps while you’re running Windows, which means you have to shut down Windows and boot back into macOS if you want to use Mac apps such as Apple Mail or Photos.