VMware vSphere® with Operations Management™ combines vSphere and vCenter™ Operations ManagementSuite™ Standard under a single suite with a single license. vSphere with Operations Management lets you gain operational insight in vSphere and optimize resource allocation by providing monitoring, performance, and capacity information about the vSphere environment.
vSphere with Operations Management is licensed on a per-processor basis. To run vSphere with Operations Management, you must assign ESXi hosts a vSphere with Operations Management license. You can run unlimited number of virtual machines on the hosts that are licensed for vSphere with Operations Management.