Understanding application virtualization
Citrix application virtualization technology isolates applications from the underlying operating system and from other applications to increase compatibility and manageability. As a modern application delivery solution, XenApp virtualizes applications via integrated application streaming and isolation technology. This application virtualization technology enables applications to be streamed from a centralized location into an isolation environment on the target device where they will execute. With XenApp, applications are not installed in the traditional sense. The application files, configuration, and settings are copied to the target device and the application execution at run time is controlled by the application virtualization layer. When executed, the application run time believes that it is interfacing directly with the operating system when, in fact, it is interfacing with a virtualization environment that proxies all requests to the operating system.
XenApp is unique in that it is a complete system for virtual application delivery, offering both online and offline application access through a combination of application hosting and application streaming directly to user devices. When users request an application, XenApp determines if their device is compatible and capable of running the application in question. The minimum requirements of a target device are a compatible Windows® operating system and appropriate Citrix client software. If the user device meets minimum requirements, then XenApp initiates application virtualization via application streaming directly into an isolated environment on the user’s device. In the event that the user device is not capable of running a particular application, XenApp initiates session virtualization.