host OS

The host OS, or host operating system, is the main software that runs on a physical computer or server, managing hardware resources like the CPU, memory, storage, and peripherals. It provides a platform for other software to operate and coordinates all hardware and software functions. Examples include Windows, macOS, and Linux. When running virtual machines or other environments, the host OS acts as the foundation, enabling multiple virtual systems or applications to coexist efficiently on the same physical machine. Essentially, it’s the core software that keeps the entire system functioning and organized.