The security administrator has been tasked with providing a solution that would not only eliminate the need for physical desktops, but would also centralize the location of all desktop applications…

VLANs are a network segmentation technology that segregates broadcast domains but do not replace physical desktops or centralize applications.

VDI centralizes desktop images and applications on servers within the organization's own data center, which eliminates the need for powerful physical desktop hardware at user workstations. Because the servers remain on-premises, the organization retains full physical control of all network and computing devices. This directly satisfies both requirements: no physical desktops and no loss of physical control.

PaaS (Platform as a Service) is a cloud delivery model where the infrastructure is hosted by a third-party provider, which means the organization loses physical control of its devices.

IaaS (Infrastructure as a Service) also relies on third-party cloud infrastructure, which violates the requirement to maintain physical control of network devices.