What is vSphere ESXi?

VMware vSphere ESXi is a bare-metal hypervisor that sits directly on the server hardware, allowing multiple virtual machines (VMs) to run on a single physical server. It's a core component of VMware's vSphere virtualization platform, enabling resource pooling, consolidation, and efficient management of server resources. ESXi is commonly used in enterprise environments to improve server utilization, reduce hardware costs, and simplify IT management.