Save energy, go green
Migrating physical servers over to virtual machines and consolidating them onto far fewer physical servers can significantly lower monthly power costs.
Server consolidation with virtualization will reduce the number of physical servers that you need. That will also mean less networking gear, a smaller number of racks needed with less floor space required.
VMWare and HyperV both have advanced features that aren’t found on physical servers, which helps with business continuity and increased uptime with capabilities such as live migration, fault tolerance and high availability
These technologies keep virtual machines running or give them the ability to quickly recover from unplanned outages. The ability to quickly and easily move a virtual machine from one physical server to another is perhaps one of the greatest single benefits of virtualization.
Backups are greatly simplified with backup of all virtual machines possible from one console.
Improve disaster recovery
By removing the dependency on a particular hardware vendor or server model, a disaster recovery site no longer needs to keep identical hardware on hand to match the production environment. You have the option of spare server capacity at a remote site or Cloud based disaster recovery such as Azure Site Recovery.