Merge pull request #17771 from hariarun18/docs-editor/scale-requirements-1745854303

Clarify AKS on Azure Local scale and concurrency limits; improve formatting

Author: prmerger-automator[bot]

AKS-Arc/scale-requirements.md

@@ -26,16 +26,35 @@ This article describes the maximum and minimum supported scale count for AKS on
 | Number of node pools in an AKS cluster  | 1  | 16  |
 | Number of nodes in a node pool (empty node pools not supported)  | 1 | 64 |
 | Total number of nodes in an AKS cluster across nodepools | 1 | 200 |
-| Number of AKS clusters per Azure Local cluster | 0| 32 |
+| Number of AKS clusters per Azure Local cluster | 0 | 32 |
 
-## Concurrency for AKS enabled by Arc
+## Concurrency for AKS on Azure Local
 
 | Scale item  | Count  |
 |-------------|--------|
 | Number of concurrent AKS cluster creations on an ARB  | 8 |
 | Number of concurrent node pool creations on an ARB  | 8  |
-| Number of concurrent operations across all different AKS clusters such as upgrade/scaling, etc., excluding creating node pool or clusters per ARB  | 32  |
-| Number of long running operations that can be run simultaneously on an AKS cluster  | 1 per cluster.  |
+| Number of concurrent operations across all different AKS clusters such as upgrade/scaling, etc., excluding creating node pool or clusters  | 32 |
+| Number of long running operations that can be run simultaneously on an AKS cluster  | 1 per cluster. |
+
+## Scale requirements when using autoscaler with AKS on Azure Local
+
+> [!NOTE]
+> When autoscaler is enabled, AKS on Azure Local currently supports a maximum of **12 clusters** per Azure Local environment.
+>
+> If this limit is exceeded, operations such as creating additional clusters or node pools may not succeed. To manage capacity, we recommend deleting unused clusters using [az aksarc delete](/cli/azure/aksarc#az-aksarc-delete).
+>
+> If autoscaler is enabled in an environment that already exceeds the supported cluster count, performance may be impacted. Managing within supported limits is recommended.
+
+| Scale item  | Count  |
+|-------------|--------|
+| Maximum number of AKS clusters with autoscaler enabled | 12 |
+| Number of concurrent AKS cluster creations | 4 |
+| Number of concurrent node pool creations | 4 |
+
+Learn more about autoscaling with AKS on Azure Local [here](/azure/aks/aksarc/auto-scale-aks-arc).
+
+If you're operating at enterprise scale and have scenarios that require higher cluster counts with autoscaler enabled, reach out to your Microsoft account team or support to discuss potential options.
 
 ## Default values for virtual machine sizes