CuRP deprecation doc changes

Include deprecation timeline

Author: juliamwang6

articles/azure-resource-manager/custom-providers/overview.md

@@ -7,6 +7,26 @@ ms.date: 06/19/2019
 ms.author: jobreen
 ---
 
+> [!IMPORTANT]
+> Custom Resource Providers is currently in public preview.
+> This preview version is provided without a service level agreement, and it's not recommended for production workloads. Certain features might not be supported or might have constrained capabilities.
+> For more information, see [Supplemental Terms of Use for Microsoft Azure Previews](https://azure.microsoft.com/support/legal/preview-supplemental-terms/).
+>
+> In 2026, Azure Resource Manager will be deprecating the Custom Resource Provider (CuRP) service.
+>
+> We will retire the feature by **October 31, 2026**. We will be performing a scream test on October 27, 2025, as part of this deprecation. On July 31, 2026, creates, updates, patches, and actions to custom resources and resource providers will be blocked. You will only be able to read and delete your custom resources and resource providers.
+>
+> We understand that this deprecation may be an inconvenience to you and your team. Here are some potential CuRP alternatives you can use to support your existing workflows.
+> 
+> If your CuRP scenario:
+>
+> - Only involves triggering an endpoint without the need for persistent resource management, consider [Deployment Scripts](../templates/deployment-script-template).
+> - Only involves triggering an endpoint without the need for persistent resource management, and you use Bicep, consider [Bicep Extensions](../bicep/bicep-extension).
+> - Involves triggering several different endpoints or services for your solution, consider [Azure Functions](../../azure-functions/functions-overview).
+>
+> If you have any questions, please ask your Microsoft account manager to email [email protected] with your name, company name, email contact, and subscription ID.
+
+
 # Azure Custom Resource Providers Overview
 
 Azure Custom Resource Providers is an extensibility platform to Azure. It allows you to define custom APIs that can be used to enrich the default Azure experience. This documentation describes:
@@ -17,11 +37,6 @@ Azure Custom Resource Providers is an extensibility platform to Azure. It allows
 
 :::image type="content" source="./media/overview/overview.png" alt-text="Diagram of Azure Custom Resource Providers, displaying the relationship between Azure Resource Manager, custom resource providers, and resources.":::
 
-> [!IMPORTANT]
-> Custom Resource Providers is currently in public preview.
-> This preview version is provided without a service level agreement, and it's not recommended for production workloads. Certain features might not be supported or might have constrained capabilities.
-> For more information, see [Supplemental Terms of Use for Microsoft Azure Previews](https://azure.microsoft.com/support/legal/preview-supplemental-terms/).
-
 ## What can custom resource providers do
 
 Here are some examples of what you can achieve with Azure Custom Resource Providers: