
If you want to back up the Windows 11 installation files for a specific version or plan to install the operating system on a virtual machine, you need to get the ISO file. An ISO file is a digital replica of a physical disc (such as a CD, DVD, or Blu-ray) used to store the contents of software installations.
Software vendors like Microsoft commonly use this format to distribute operating systems and tools digitally. This method eliminates the need for physical media, which can be expensive, inefficient, and environmentally wasteful.