If we have one or more active subscriptions, we can order resources from Azure Stack based on our Quotas. A Quota defines the limits of resources that a tenant subscription can consume. It can be configured per service and per location and gives the administrators a way to control the usage of resources in Azure Stack. Quotas for a service can be created from the resource provider administration blade in the administrative portal:

As per the resource provider, there is a default Quota, which means no restrictions to the resources that are available, as you can see in the following table:
Type |
Default value |
Description |