Virtualization allows multiple operating systems and applications to run on the same physical server at the same time. This increases hardware utilization and flexibility. With VMware virtualization, organizations can reduce IT costs by 80% while increasing efficiency. Virtualization enables organizations to power down servers without affecting applications or users, reducing energy costs and making datacenters more green. Key benefits include server consolidation, high availability, disaster recovery, and live migration of virtual machines between physical servers with zero downtime.