restore include

Author: gitName

articles/api-management/includes/preview/preview-callout-self-hosted-gateway-azure-arc.md

@@ -3,16 +3,27 @@ ms.service: azure-api-management
 ms.topic: include
 author: dlepow
 ms.author: danlep
-ms.date: 09/25/2024
+ms.date: 05/25/2021
 ms.custom: references_regions
 ---
 
-Azure Monitor imposes [usage limits](/azure/azure-monitor/essentials/metrics-custom-overview#quotas-and-limits) for custom metrics that may affect your ability to emit metrics from API Management. For example, Azure Monitor currently sets a limit of 10 dimension keys per metric, and a limit of 50,000 total active time series per region in a subscription (within a 12 hour period). 
-
-These limits have the following implications for configuring custom metrics in API Management:
-
-* You can configure a maximum of 10 custom dimensions per `emit-metric` policy.
-
-* The number of active time series generated by the `emit-metric` policy within a 12 hour period is the product of the number of unique values of each configured dimension during the period. For example, if three custom dimensions were configured in the policy, and each dimension had 10 possible values within the period, the `emit-metric` policy would contribute 1,000 (10 x 10 x 10) active time series.
-
-* If you configure the `emit-metric` policy in multiple API Management instances that are in the same region in a subscription, all instances can contribute to the regional active time series limit.
+> [!IMPORTANT]
+> API Management self-hosted gateway on Azure Arc is currently in preview. During preview, the API Management gateway extension is available in the following regions:
+> 
+> - Asia (East, Southeast)
+> - Australia (Central, Central 2, East & Southeast)
+> - Brazil (South & Southeast)
+> - Canada (Central, East)
+> - Europe (North, West)
+> - France (Central & South)
+> - Germany (North & West Central)
+> - India (Central, South, West, Jio central & Jio West)
+> - Japan (East & West)
+> - Korea (Central & South)
+> - Norway (East & West)
+> - South Africa (North & West)
+> - Sweden (Central)
+> - Switzerland (North & West)
+> - United Arab Emirates (UAE - Central & North)
+> - United Kingdom (UK -South)
+> - United States (US - Central, Central EUAP, East, East 2, East 2 EUAP, North Central, South Central, West Central, West, West 2, West 3)