Learn Editor: Update classic-overview.md

Author: jainsabal

articles/frontdoor/classic-overview.md

@@ -16,6 +16,10 @@ ms.date: 11/15/2024
 
 [!INCLUDE [Azure Front Door (classic) retirement notice](../../includes/front-door-classic-retirement.md)]
 
+> [!IMPORTANT]
+> Starting August 15, 2025, Azure Front Door (classic) will no longer support new domain onboarding or profile creation. Migrate to **[AFD Standard and Premium](https://ms.portal.azure.com/#%22https://ms.portal.azure.com/#%22"https://ms.portal.azure.com/#%22https://ms.portal.azure.com/#%22")** to create new domains or profiles and avoid service disruption. **[Learn more](https://ms.portal.azure.com/verifyLink?href=https%3A%2F%2Flearn.microsoft.com%2Fazure%2Ffrontdoor%2Fmigrate-tier%3FWT.mc_id%3DPortal-Microsoft_Azure_Frontdoor&id=Microsoft_Azure_Frontdoor%22https://ms.portal.azure.com/verifylink?href=https%3a%2f%2flearn.microsoft.com%2fazure%2ffrontdoor%2fmigrate-tier%3fwt.mc_id%3dportal-microsoft_azure_frontdoor&id=microsoft_azure_frontdoor%22"https://ms.portal.azure.com/verifylink?href=https%3a%2f%2flearn.microsoft.com%2fazure%2ffrontdoor%2fmigrate-tier%3fwt.mc_id%3dportal-microsoft_azure_frontdoor&id=microsoft_azure_frontdoor%22https://ms.portal.azure.com/verifylink?href=https%3a%2f%2flearn.microsoft.com%2fazure%2ffrontdoor%2fmigrate-tier%3fwt.mc_id%3dportal-microsoft_azure_frontdoor&id=microsoft_azure_frontdoor%22")**
+> Switch from Azure-managed certificates on existing domains to Bring Your Own Certificate (BYOC) or migrate to **[AFD Standard and Premium](https://ms.portal.azure.com/#%22https://ms.portal.azure.com/#%22"https://ms.portal.azure.com/#%22https://ms.portal.azure.com/#%22")** by August 15, 2025 to avoid service disruption. Existing managed certificates will be auto renewed before August 15, 2025, and remain valid until April 14, 2026.  **[Learn more](/azure/frontdoor/front-door-custom-domain-https?tabs=powershell"https://learn.microsoft.com/en-us/azure/frontdoor/front-door-custom-domain-https?tabs=powershell")**
+
 Azure Front Door (classic) is a global, scalable entry-point that uses the Microsoft global edge network to deliver fast, secure, and highly scalable web applications. It enables you to transform your global consumer and enterprise applications into robust, high-performing, and personalized modern applications that reach a global audience through Azure.
 
 :::image type="content" source="./media/front-door-overview/front-door-visual-diagram.png" alt-text="Diagram of Azure Front Door (classic) routing user traffic to endpoints.":::