Created three new articles and updated toc. Updated locations mentioned in 5 other articles to make learn page easier to maintain.

Author: svaldesgzz

articles/extended-zones/request-quota-increase.md

@@ -72,6 +72,9 @@ In this section, you request a quota increase in the Azure portal.
 
 1. Select **Next**. Review your request and select **Create**. Your request will be processed by the Extended Zones engineering team accordingly.
 
+> [!NOTE]
+> The Quota's view will only show the quota from the Extended Zone's parent region, given Extended Zones respect quota from their parent region. Nevertheless, providing the Extended Zone's information is needed when requesting quotas, as that's where the SKU is intended to be deployed. Consequently, there may be situations where the parent region is capacity constrained while the Extended Zone is not. 
+
 ## Related content
 
 - [What is Azure Extended Zones?](overview.md)