A Virtual Machine (VM) is a software-based simulation of a physical computer. It allows you to run an operating system and applications just like you would on a real computer, but all of this happens within a host system. This means you can have multiple VMs running on a single physical machine, each with its own operating system and resources, making it efficient for testing and development.
Using VMs can help save costs and resources, as they allow for better utilization of hardware. For example, a company can run different versions of software on separate VMs without needing multiple physical computers. This flexibility is beneficial for developers, system administrators, and businesses looking to optimize their IT infrastructure.