The values in this article indicate the limits of a single Citrix Virtual Apps and Desktops service instance. When the number of concurrent users exceeds 75,000, Citrix can scale out and combine multiple Citrix Virtual Apps and Desktops service instances, to deliver a unified experience at any scale.
The following table lists the limits for site-level resources.
|Active Directory domains||25|
|Hosting units per connection||40|
Resource location limits
The following table lists the limits for each resource location.
If your requirements exceed these limits, Citrix recommends using additional resource locations.
|Active Directory domains||1|
Machine Creation Services (MCS) limits
The MCS limits in the following table are the recommended maximums for a single public provider subscription.
You are likely to reach quota limits from your public cloud vendor at lower levels. In such cases, contact the vendor to raise your subscription quota. For larger-scale deployments, Citrix recommends a hub-and-spoke model, where VDAs are distributed across multiple subscriptions and host connections.
For more information, see the following reference architectures:
- Citrix Virtual Apps and Desktops Service on Azure
- Reference Architecture for Citrix Virtual Apps and Desktops on AWS
|VDAs per Amazon Web Services region||1,500|
|VDAs per Google Cloud Platform project||500|
|VDAs per Microsoft Azure subscription||1,200|
|Concurrent Director full administrators||5|
|Concurrent Director help desk administrators||50|
|Concurrent end users||75,000|
|Concurrent Studio cloud administrators||50|
|Concurrent Studio help desk administrators||60|
|Resources published to a single user||250|
|Session launches per minute||2,000|