Microsoft Hyper-V is a virtualization technology that allows users to create and manage virtual machines on a physical server. This means you can run multiple operating systems on a single computer, making it easier to test software, run applications, or consolidate servers. Hyper-V is especially useful for businesses that want to optimize their IT resources and reduce hardware costs. With Hyper-V, users can easily allocate resources like CPU, memory, and storage to each virtual machine. It also provides features like live migration, which lets you move virtual machines between servers without downtime, ensuring that applications remain available and responsive.