Update in-place-migration-powershell.md

Author: hirenshah1

articles/cloud-services-extended-support/in-place-migration-powershell.md

@@ -15,6 +15,9 @@ ms.custom: devx-track-azurepowershell
 
 # Migrate to Azure Cloud Services (extended support) using PowerShell
 
+> [!IMPORTANT]
+> As of March 31, 2025, cloud Services (classic) is deprecated and will be fully retired on March 31, 2027. [Learn more](https://aka.ms/csesretirement) about this deprecation and [how to migrate](https://aka.ms/cses-retirement-march-2025).
+
 These steps show you how to use Azure PowerShell commands to migrate from [Cloud Services (classic)](../cloud-services/cloud-services-choose-me.md) to [Cloud Services (extended support)](overview.md).
 
 ## Plan for migration