A virtual machine (VM) is a software-based emulation of a physical computer system. It allows multiple operating systems to run on a single physical machine, providing a way to run different applications and software on the same hardware without interference. Virtual machines are commonly used in cloud computing environments, software development, testing, and server consolidation. They offer benefits such as improved resource utilization, easy migration, and isolation of applications. Popular virtual machine software includes VMware, VirtualBox, and Microsoft Hyper-V.
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