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There are two main types of virtual machines: process virtual machines and system virtual machines. Process virtual machines, such as the Java Virtual Machine (JVM), are designed to run a single process or application, while system virtual machines are capable of running a complete operating system.
Virtual machines are created and managed using virtualization software, such as VMware, VirtualBox, Hyper-V, and KVM. These tools allow users to create, configure, and control virtual machines, allocate resources, and connect them to networks and storage.
Overall, virtual machines provide a flexible and efficient way to run multiple operating systems and applications on a single physical machine, making them a valuable tool for developers, IT professionals, and organizations looking to optimize their computing resources.