VMware
In plain terms
A leading enterprise virtualization company and product suite.
Going deeper
VMware provides virtualization platforms (like ESXi and vSphere) that run many virtual machines on physical servers in data centers. It pioneered enterprise virtualization.
Under the hood
ESXi is a Type-1 hypervisor; vSphere manages clusters at scale with live migration and HA.
Examples
Data center virtualization, ESXi, vSphere, enterprise VMs, cloud infrastructure.
Think of it like...
Like a property manager dividing one building into many independent, movable apartments.