Custom Domains Quota

Question

Hi,  
  
https://eu-central-1.console.aws.amazon.com/servicequotas/home?region=eu-central-1#!/services/cognito-idp/quotas/L-71267F98 shows there's a fixed quota of 4 domains per account when using custom Cognito domains.  
  
Does this mean I can only have 4 domains as custom domains like example.com per account or does this also mean I can only have 4 subdomains per account on a particular domain like auth.example.com?

Answer

Hi,   
  
By custom domain, we mean when you specify the domain name in the Amazon Cognito console, and you provide a certificate you manage with AWS Certificate Manager (ACM). After you add your domain, Amazon Cognito provides an alias target, which you add to your DNS configuration.  
  
That is, both auth.example.com or example.com would be treated as a custom domain. More information on the same can be found at:  
  
>> https://docs.aws.amazon.com/cognito/latest/developerguide/cognito-user-pools-add-custom-domain.html  
  
Additionally, we can find Cognito Hard Limits at :  https://docs.aws.amazon.com/cognito/latest/developerguide/limits.html#limits-hard  
  
Hope this helps!

Answer

Tried it by myself by setting up 5 User Pools and tried to set up 5 subdomains for 1 domain:  
  
The limit for custom domains is: 4. (Service: AWSCognitoIdentityProviderService; Status Code: 400; Error Code: LimitExceededException; Request ID: ...; Proxy: null)

Custom Domains Quota

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