Each subscription has a limited quota for each resource type. For example, there could be a maximum of 60 public IP addresses provisioned with an MSDN Microsoft account. Similarly, all resources have a maximum default limit for each resource type. These resource type numbers for a subscription can be increased by contacting Azure support or clicking on the Request Increase button.
The usage and quota information is available from the usage + quotas sub menu of the Subscription menu:
This blade shows all resource types provisioned in subscription along with their location and counts. Here the quota for classic storage accounts is 100 and currently three classic storage accounts have been consumed.
There are filter criteria's available based on location, providers, usage, and quotas. Custom reports based on these filter criteria can be generated.
...
