ir desktop images and applications from screens on their desktop or from mobile devices. This relieves IT staff from troubleshooting software, applying patches to software, and upgrading software on employees' computers, which occupies a considerable amount of time. Moreover, ensuring that desktop and laptop computers don't contaminate networks with viruses is a complex and time-consuming task. End users who install unknown programs or inadvertently open e- mail attachments that contain viruses can unwittingly bring computer networks to their knees. In addition, users today are mobile. They access their applications and documents from all types of mobile devices-laptops, desktop computers, tablets, and smartphones. In addition to providing portability and security, desktop virtualization ensures that users are able to access applications that require, for instance, Windows or others that operate on Mac operating systems. All of these factors plus improvements in desktop virtualization and lower costs for VDI are pushing an interest in desktop virtualization by large enterprises. With desktop virtualization, users have a screen, and keyboard. A connector box linked to their computer is tied to a centralized server that runs desktop virtualization software as in Figure 2-7. Users' desktops are hosted in the central server as software. www.TechnicalPDF.com databases center tenterprise cloud, Connector computers desktop centers. www. TechnicalPDF.com Figure 2-7 An example of desktop virtual integration (VDI). When a user turns on his screen, he sees an image of his desktop, complete with icons. Virtual Desktop Integration is referred to as thin-client technology because very little intelligence is needed at the end user's device. The user's equipment is referred to as the client. Organizations such as Dell, Citrix Systems, Inc., LISTEQ, Microsoft, Nimboxx, Oracle, and VMware supply desktop virtualization software. In the past, when Virtual Desktop Integration was tested, most organizations that installed it experienc