Virtual Machine

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 What is Virtual Machine ? 


A Virtual Machine instance of a computer that can perform almost all of the same functions as a computer, including running applications and operating systems. 





A Virtual Machine (VM) is a digital version of a physical computer. Virtual Machine software can run programs and operating systems, store data, connect to networks, and do other functions, and requires maintenance such as updates and system monitoring. Multiple VMs can be hosted on a single machine, often a server, and then managed using virtual machine software. This provides flexibility for compute resources (compute, storage, network) to be distributed among VMs as needed, increasing overall efficiency. This architecture provides the basic building blocks for the advanced virtualized resources we use today, including cloud computing.







What are virtual machines used for?

Some of the most popular reasons people run virtual machines include:

  • Testing - Oftentimes software developers want to be able to test their applications in different environments. They can use virtual machines to run their applications in various OSes on one computer. This is simpler and more cost-effective than having to test on several differe
    nt physical machines.
  • Running software designed for other OSes - Although certain software applications are only available for a single platform, a VM can run software designed for a different OS. For example, a Mac user who wants to run software designed for Windows can run a Windows VM on their Mac host.
  • Running outdated software - Some pieces of older software can’t be run in modern OSes. Users who want to run these applications can run an old OS on a virtual machine.


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