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How to use Azure CDN (Content Delivery Network)?
Updated on 31st May, 23 418 Views

A CDN is a network of servers that can deliver web contents to users quickly and efficiently. To reduce latency, CDNs cache content on edge servers in close proximity to end users known as point-of-presence (POP) sites. Azure CDN works the same way to provide content to its global resources and users.

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You will learn more about the Azure content delivery network in this blog through the following topics:

Overview of Azure CDN

Azure CDN provides developers with a global solution for delivering high-bandwidth content to users by caching it at strategically-positioned physical nodes throughout the world. By exploiting multiple network improvements employing CDN POPs, It can also speed up dynamic material that cannot be cached.

Azure CDN is available in standard and premium tiers with different providers such as Standard CDN with Microsoft, Standard or Premium CDN with Verizon, and Standard CDN with Akamai.

Azure CDN Features

  • Fast content delivery: Caching static content at locations near to the user base improves the speed with which user requests can be completed.
  • Dynamic site acceleration: With the increasing requirement for delivering personalized content to users, CDNs also need to provide a solution to deliver dynamic content quickly as they cannot be cached.

Azure content delivery network, with the help of Azure Front Door, provides dynamic site acceleration through route optimization, TCP optimization, object prefetch, adaptive image compression, etc.

  • High availability and highly reliable uptime: This really speeds up loading times while providing best-in-class security. The availability of Azure CDN is a crucial aspect that contributes to its use. The service is available all around the world and the uptime is extremely consistent.
  • Significant increase in load times: The vast network of edge servers from Microsoft Azure, makes up for significant increase in load times for applications that serve global audiences.
  • Easy to set up and manage: Azure CDN leverages Microsoft’s global presence to deliver content at astonishing speeds all the while remaining very easy to set up with low maintenance requirements.

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How to use Azure CDN?

When a user requests data from a website, the DNS sends this request the appropriate POP, which is usually the one that is geographically closest to the user. If the requested data is not present in a server on the POP, the server requests the data from the origin server. The origin can be a resource in Azure. The data is sent to the server in the request location and is cached there and returned. The user will then get this cached data.

The advantage of caching this data is that any number of users who request the same kind of data from then will get a cached copy of the data until its life cycle in the POP server is over. This makes for the efficient delivery of content to the users.

Caching is done on static content only but Azure CDN can also deliver dynamic content at high speeds through dynamic site acceleration.

When an endpoint is created in Azure content delivery network, it can be optimized for the following depending on the provider:

  • General web delivery
  • General media streaming
  • Video-on-demand media streaming
  • Large file download
  • Dynamic site acceleration

Create Azure CDN

Azure App Service, Azure storage account, Azure cloud services, etc., can be used to configure the CDN.

This section will explain how to configure CDN from the Azure storage account. For that, first a storage account needs to be created.

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Creating a Storage Account

  • The first requirement is an Azure Account to which you should sign in. Go to and log in with your credentials.
  • Search for Storage Accounts and click on Create
Storage Accounts
  • Enter the details in the Create Storage Account panel.
Enter Details
  • Add the subscription type you prefer. Give the name of the resource group if it already exists or create a new resource group here. The name of the storage account should be unique as it is used as an identifier for the storage account created. You can keep the rest of the settings in default and go forReview and Create.
  • Creating the resource can be time-consuming. Once complete, click on Go to resource.
Go to resource

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Enabling Azure CDN for the Storage Account

  • On the resource page, select Azure CDN from Security + networking in the left-hand menu and enter the details in the New endpoint section.
Enter details for new endpoint
  • Select Create New and enter a name for the CDN profile. The profile is a collection of endpoints. Then select a pricing option. After that, give a unique name for the endpoint.
  • Click on Create to deploy the CDN. The created endpoint can be seen in the list as running.
Endpoint Created

Why use Azure CDN?

A large percentage of web traffic is static content such as images, text, videos, etc. So, delivering content for all requests coming into the origin server will be hectic for the server. Instead, if the content is cached in locations near the users, the load on the origin server can be transferred to these globally-located POPs. This reduces the need of having to keep powerful and costly infrastructure for the origin server.

Advantages of Azure CDN

The main advantages of using Azure CDN are:

  • High performance in delivering web content
  • No need to spend high amounts for setting up infrastructure
  • Easy configuration and maintenance
  • Decrease load on the main server and offload it to the edge servers

Disadvantages of Azure CDN

The disadvantages are of using Azure CDN are:

  • The edge servers in a CDN can become points of failures, which can cause the web content from not being delivered
  • Caching and replicating sensitive data might prove to be unwanted

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Azure CDN Pricing

Azure CDN is available in Standard Microsoft, Standard Verizon, and Standard Akamai in India.

Outbound Data TransfersZone 1Zone 2Zone 3Zone 4Zone 5
First 10 TB/Month₹5.8357 per GB₹9.2939 per GB₹16.7866 per GB₹9.3659 per GB₹11.3832 per GB
Next 40 TB (10–50 TB/Month)₹5.4034 per GB₹8.7175 per GB₹13.4005 per GB₹9.0778 per GB₹8.7175 per GB
Next 100 TB (50–150 TB/Month)₹4.0346 per GB₹8.0691 per GB₹12.1037 per GB₹8.0691 per GB₹7.3487 per GB
Next 350 TB (150–500 TB/Month)₹2.6657 per GB₹6.7003 per GB₹10.7348 per GB₹6.7003 per GB₹6.7003 per GB

The pricing given here is for Standard Microsoft, Standard Verizon, and Standard Akamai. For data transfers above the specified limits, you need to contact Microsoft Azure Sales for pricing details.

Other pricing plans depending on the provider are also present for which you can refer to Azure CDN pricing.


Azure CDN gives a low-cost solution for setting up fast content delivery for your applications or services. CDN can help to significantly reduce the cost and effort in setting up an application or service that serves a global audience. The outstanding caching and dynamic content acceleration capabilities of CDN takes care of the rest and provide superfast content for your users.

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