Review: VMware vSphere 5.5 adds speed and usability

VMware vSphere 5.5, the latest release of VMware's flagship virtualization hypervisor and central management server, has something for companies of all sizes. Usability and speed enhancements to the vSphere Web Client and the redesign of the vCenter single sign-on architecture are good reasons for all vSphere customers -- large or small -- to plan on making the move to vSphere 5.5 without delay.