Product Documentation

About the XenApp and XenDesktop Service

Sep 21, 2016

The XenApp and XenDesktop Service is a service of Citrix Cloud. The XenApp and XenDesktop Service offers secure access to virtual Windows, Linux, and web apps and desktops. This service is based on XenApp and XenDesktop technology.

Key concepts and terminology

  • Host connection: A connection between the XenApp and XenDesktop Service and your on-premises hypervisor, supported cloud provider, or hybrid environment. Using the host connection, the XenApp and XenDesktop Service can provision machines to the network resources you specify and manage user access to the apps and desktops you make available. See Configure Provisioning for more information.
  • Machine catalog: A collection of physical or virtual machines, managed as a single entity. All machines in the machine catalog are configured identically, using a master image that you create. For more information, see Setting up and assigning resources.
  • Virtual Delivery Agent (VDA): An agent installed on machines in a catalog that allows the resources they host to be made available to users. Typically, the agent is installed on the master image for the catalog, ensuring all machines provisioned from that image have the agent as well. The XenApp and XenDesktop Service uses the term "VDA" to refer to the agent as well as the machines on which it is installed.
  • Delivery group: A collection of users who have access to a set of resources. For more information, see Setting up and assigning resources.
  • Studio: The management console for the XenApp and XenDesktop Service. Using Studio, you can set up host connections, create machine catalogs, and assign users and machines to delivery groups.

Get started

To prepare your environment for using the XenApp and XenDesktop Service Trial, download the XenApp and XenDesktop Service Trial Checklist.

To set up the XenApp and XenDesktop Service, see Getting Started with the XenApp and XenDesktop Service.

Service Level Goal

The XenApp and XenDesktop Service (the Service) is designed using industry best practices to achieve cloud scale and a high degree of service availability.

Citrix’s goal is that in any 30 calendar day period 99.9% of the time users can access their app or desktop session through the Service.
Performance against this goal can be monitored on an ongoing basis at http://status.cloud.com

Limitations

The calculation of this Service Level Goal will not include loss of availability from the following causes:

  • Customer failure to follow configuration requirements for the service documented on https://docs.citrix.com.
  • Caused by any component not managed by Citrix including, but not limited to, customer controlled physical and virtual machines, customer installed and maintained operating systems, customer installed and controlled networking equipment or other hardware; customer defined and controlled security settings, group policies and other configuration policies; public cloud provider failures, Internet Service Provider failures or other external to Citrix’s control.
  • Service disruption due to reasons beyond Citrix’s control, including natural disaster, war or acts of terrorism, government action.