What is "regarding virtual machines?

Virtual machines are software systems that emulate a real computer system and can run multiple operating systems simultaneously. They essentially consist of a virtualized hardware system, such as CPU, memory, storage, and network interface devices, which allow multiple virtual machines to run on a single physical host machine.

Virtual machines are typically used for various purposes, such as running legacy applications and systems, testing new software and applications, isolating insecure environments, and providing efficient resource utilization. They can also be used to create cloud-based infrastructure solutions, such as private clouds, public clouds, and hybrid clouds.

The virtualization technology used in virtual machines is referred to as hypervisor, which is responsible for managing hardware resources and providing a layer of abstraction between the hardware and the virtual machines. Some popular hypervisors include VMware, Hyper-V, and VirtualBox.

In addition to virtual machines, there are also other types of virtualization technologies, such as application virtualization, network virtualization, and desktop virtualization. However, virtual machines remain one of the most widely used virtualization technologies due to their versatility, compatibility, and scalability.