Azure CDN Standard from Microsoft (classic) retirement FAQ

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Azure Front Door introduced two new tiers named Standard and Premium on March 29, 2022. These tiers offer improvements over the current product offerings of Azure CDN Standard from Microsoft (classic), incorporating capabilities such as Azure Private Link integration, Bot management, advanced Web Application Firewall (WAF) enhancements with DRS 2.1, anomaly scoring-based detection and bot management, out-of-the-box reports and enhanced diagnostic logs, a simplified pricing model, and much more.

In our ongoing efforts to provide the best product experience and streamline our portfolio of products and tiers, we're announcing the retirement of the Azure CDN Standard from Microsoft (classic) tier. This retirement will affect the public cloud and the Azure Government regions of Arizona and Texas, effective September 30, 2027. We strongly recommend all users of Azure CDN Standard from Microsoft (classic) to transition to Azure Front Door Standard and Premium.

Frequently asked questions

When is the retirement for Azure CDN Standard from Microsoft (classic)?

Azure CDN Standard from Microsoft (classic) will be retired on September 30, 2027.

Why is Azure CDN Standard from Microsoft (classic) being retired?

Azure CDN Standard from Microsoft (classic) is a legacy Content Delivery Network service that provides static caching capabilities. In March 2022, we announced the general availability of Azure Front Door Standard and Premium. These new tiers serve as a modern Content Delivery Network platform that supports both dynamic and static scenarios with enhanced Web Application Firewall capabilities, Private Link integration, simplified pricing model and many more enhancements. As part of our plans to offer the best product experience and simplify our product portfolio, we're announcing the retirement of Azure CDN Standard from Microsoft (classic) tier.

What advantages does migrating to Azure Front Door Standard or Premium tier offer?

Azure Front Door Standard and Premium tiers represent the enhanced versions of Azure CDN Standard from Microsoft (classic). They maintain the same Service Level Agreement (SLA) and offer more benefits, including:

  • A unified static and dynamic delivery platform, with simplified cost model.
  • Enhanced security features, such asPrivate Link integration, advanced WAF enhancements with DRS 2.1, anomaly scoring based detection and bot management, and many more to come.
  • Deep integration with Azure services to deliver secure, accelerated, and user friendly end-to-end cloud solutions. These integrations include:
  • Improved capabilities such as simplified, more flexible rules engine with regular expressions and server variables, enhanced and richer analytics and logging capabilities, and more.
  • The ability to update separate resources without updating the whole Azure Front Door instance through DevOps tools.
  • Access to all future features and updates on Azure Front Door Standard and Premium tier.

For more information supported features, see comparison between Azure Front Door and Azure CDN services.

How does the performance of the Azure Front Door Standard or Premium tier compare to that of Azure CDN Standard from Microsoft (classic)?

The Azure Front Door Standard and Premium tier have the same Service Level Agreement (SLA). Our goal is to ensure Azure Front Door Standard and Premium delivers optimal performance and reliability.

What will happen after September 30, 2027 when the service is retired?

After the service is retired, you'll lose the ability to:

  • Create or manage Azure CDN Standard from Microsoft (classic) resources.
  • Access the data through the Azure portal or the APIs/SDKs/client tools.
  • Receive service updates to Azure CDN Standard from Microsoft (classic) or APIs/SDKs/Client tools.
  • Receive support for issues on Azure CDN Standard from Microsoft (classic) through phone, email, or web.

How can the migration be completed without causing downtime to my applications? Where can I learn more about the migration to Azure Front Door Standard or Premium?

We offer a zero-downtime migration tool. The following resources are available to assist you in understand and perform the migration process:

  • Familiarize yourself with the zero-downtime migration tool. It's important to pay attention to the section of Breaking changes when migrating to Standard or Premium tier and resource mapping.
  • Learn the process of migrating from Azure CDN Standard from Microsoft (classic) to Standard or Premium tier using the Azure portal.

How will migrating to Azure Front Door Standard or Premium affect the Total Cost Ownership (TCO)?

For more information, see the pricing comparison between Azure Front Door tier.

Which clouds does Azure CDN Standard from Microsoft (classic) retirement apply to?

Currently, Azure CDN Standard from Microsoft (classic) retirement affects the public cloud and Azure Government in the regions of Arizona and Texas.

Can I make updates to Azure CDN Standard from Microsoft (classic) resources?

You can still update your existing Azure CDN Standard from Microsoft (classic) resources using the Azure portal, Terraform, and all command line tools until September 30, 2027. However, you won't be able to create new Azure CDN Standard from Microsoft (classic) resources starting October 1, 2025. We strongly recommend you migrate to Azure Front Door Standard or Premium tier as soon as possible.

Can I roll back to Azure CDN Standard from Microsoft (classic) after migration?

No, once migration is completed successfully, it can't be rolled back to classic. If you encounter any issues, you can raise a support ticket for assistance.

How will the Azure CDN Standard from Microsoft (classic) resources be handled after migration?

We recommend you delete the Azure CDN Standard from Microsoft (classic) resource once migration successfully completes. Azure Front Door sends notification through Azure Advisor to remind users to delete the migrated classic resources.

What are the available resources for support and feedback?

If you have a support plan and you need technical assistance, you can create a support request with the following information:

  • Issue type, select Technical.
  • Subscription, select the subscription you need assistance with.
  • Service, select My services, then select Azure CDN.
  • Resource, select the Azure CDN resource.
  • Summary, describe the problem you’re experiencing with the migration.
  • Problem type, select Migrating Microsoft CDN to Front Door Standard or Premium

Next steps

  • Migrate from Azure CDN Standard from Microsoft (classic) to Standard or Premium tier using the Azure portal