Content Delivery Networks (CDN)

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Cloudflare, from the company of the same name in San Francisco, provides DDoS and bot mitigation security for business domains, as well as a content delivery network (CDN) and web application firewall (WAF).

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Cloudflare, from the company of the same name in San Francisco, provides DDoS and bot mitigation security for business domains, as well as a content delivery network (CDN) and web application firewall (WAF).

Amazon CloudFront

CloudFront is the content delivery network (CDN) from Amazon Web Services.


Akamai Technologies, headquartered in Boston, offers a Akamai: a content delivery network (CDN).

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IBM Cloud Internet Services

IBM Cloud Internet Services is a set of edge network services for securing internet-facing applications from DDoS attacks, data theft, and bot attacks, as well as optimizing their web apps or ensuring global responsiveness and the ongoing availability of their internet-facing applications.…

Google Cloud CDN

The Google Cloud CDN is touted as a low cost option with tight integration with Google Cloud apps and services.

Azure CDN

Microsoft offers a content delivery network, Azure CDN.


Cloudimage offers a way to optimize and accelerate images for the web.Cloudimage automates the transformation and optimization of images on the fly and accelerates their distribution via the Content Delivery Network (CDN). Cloudimage helps web pages to become faster and lighter, to…

StackPath Edge Delivery

The StackPath (formerly Highwinds) Content Delivery Network provides a scalable DNS with load balancing, traffic management, DDoS protection and Web Application Firewall (WAF) to support and protect enterprise websites and applications.

Fastly Edge Cloud Platform

Fastly, headquartered in San Francisco, offers the Fastly Edge Cloud Computing, Content Delivery Network (CDN) (formerly Fastly Deliver@Edge). Priced by bandwidth in gigabytes and number of file requests, Fastly supports image optimization, video and streaming, load balancing, and…

CacheFly CDN

CacheFly offers a content delivery network.


G-Core Labs provides a range of international services for customers of different industries that develop their business online. The company's services include managed hosting, content delivery network (CDN), advanced streaming platform for professional broadcasts and streaming of…

12 is an image management and delivery solution for websites and apps to deliver high-quality visuals without compromising performance. Whether operating an e-commerce store or a content website or a travel website, ImageKit provides: - A smart image CDN to simplify image…

Imperva CDN

Imperva CDN provides intelligent and caching controls, content and network optimization, application delivery rules, and high website availability, and is available as part of the Imperva FlexProtect. The Imperva CDN is based on resources acquired with Incapsula.

IBM Cloud Content Delivery Network

IBM now supplies a CDN via IBM Cloud, via their partnership with Akamai, the IBM Cloud Content Delivery Network.


OnApp, headquartered in London, provides a content delivery network (CDN).

Alibaba Cloud CDN

Alibaba Cloud CDN delivers content to users from the nodes that are nearest them, accelerating the response to user requests and increasing the response rate. CDN also resolves the delivery latency problem that is usually caused by distribution, bandwidth, and server performance…

Edgio Delivery

Edgio (formerly Limelight Networks, rebranded to Edgio after the acquisition of Edgecast) offers their global edge network to bring data closer to every user, delivering content faster, safer and easier. Edgio Delivery boasts more than 7,000 global interconnections to last-mile networks…

Azure Front Door

Azure Front Door is a cloud content delivery network (CDN) service that helps users deliver high performance, scalability, and a secure user experiences for content and applications. It includes a customizable rules engine for advanced routing capabilities. It boasts instant scalability…

Lumen CDN
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Lumen Content Delivery Network (CDN), formerly CenturyLink CDN, is a platform that delivers for businesses that demand seamless Internet video playback, high-performance websites or far-reaching digital file distribution. The Lumen CDN is specially architected into the Lumen IP backbone…

Kingsoft Cloud

Kingsoft Cloud is a cloud service and content delivery network (CDN) option with global clusters of data centers and many data centers across China, providing a media delivery and streaming infrastructure.

Tencent CDN
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Tencent Cloud Content Delivery Network (CDN) is a delivery acceleration service that enables nearby access for end users by delivering content to cache nodes deployed worldwide.

CDNsun Content Delivery Network (CDN)

Since 2012 CDNsun has helped clients accelerate their online content, stating their mission is to provide affordable Content Delivery Network (CDN) services that are of high reliability, performance and security. Their solutions include website acceleration, software & game delivery,…

AT&T Synaptic Cloud

AT&T Synaptic Cloud is infrastructure as as service (IaaS). Presently, Synaptic Cloud services includes AT&T Netbond for Cloud network connectivity solution, and the Content Delivery Network (CDN) Service from AT&T.

Aryaka SmartCDN

Aryaka in San Mateo offers SmartCDN, a CDN service which they state provides superior performance for dynamic IP applications for users worldwide. It leverages Aryaka’s global private Layer 2 network to bypass the congested public internet across the middle-mile, delivering enterprise-…

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ChinaCache is a content delivery network (CDN) from the Chinese company of the same name.

Learn More About Content Delivery Networks (CDN)

What is a Content Delivery Networks (CDN)?

A Content Delivery Networks (or CDN) is a service operating across a widely distributed system of servers to bring web content to an end-user based on the end-user's geographic location.

A server optimally situated to deliver the best performance and fastest load times is determined algorithmically, with the goal of noticeably improving the end-user's experience (e.g. reduced page load time). This technology is becoming more essential as websites offer more streaming video, e-commerce and other applications where performance really matters.

Content Delivery Network (CDN) Features & Capabilities

  • Dynamic site acceleration

  • CDN caching rules

  • Diagnostic logs

  • File compression

  • Geo-filtering

  • HTTP/2 support

  • DDOS protection

How CDN’s Work

CDN providers cache content in their own network or in third-party networks. When a user clicks on a website, the CDN redirects the request to the to the server geographically closest to the user without the user being aware. The CDN calculates which server is nearest to the requestor and delivers content based on those calculations. The CDN eliminates the number of hops that a data packet must make which leads to optimized bandwidth and increased performance. It can also be useful in the event of an outage as content housed on a CDN remains accessible to at least a portion of the user base.

More recently, CDNs have been using machine learning technology to enable faster load and delivery times.

CDN Comparison

When choosing a CDN for your business, there are a few factors you should consider.

Reliability: When choosing a CDN, one of the key factors you should consider is reliability. If your content requires the utmost stability, you should choose a CDN that boasts near perfect uptime. You should be aware that this will increase the cost of the service.

DDoS Protection: Many CDNs offer DDoS protection, though some do not. Additionally, some specialize in DDoS protection. If security is your primary concern, you should choose a CDN that specializes in DDoS protection.

Performance: One of the key benefits of CDN solutions is performance for the content it hosts. If you need high performance for your content, you should consider the performance of each CDN you consider.

Pricing Information

CDN pricing is typically a price per GB, with a sliding scale of decreasing cost as the overall volume increases. Price also varies depending on the geographic zone. As an example, for the first tier of 10 TB in North America and Europe, the per GB price may vary between $0.04 to $0.25 or more, depending on product capabilities.

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Frequently Asked Questions

What businesses benefit most from CDN solutions?

There are two types of businesses that benefit most from CDN solutions. The first are businesses that need high performance for their content. CDNs offer fast load speed. Second, businesses concerned about DDoS attacks can benefit from CDNs.

Are there free or open-source CDNs?

There are no open source CDNs that are fully featured. There are some CDNs that are more affordable, but you may have to sacrifice performance, uptime, or security.

What are the key features of CDNs?

The most important features of CDNs are reliability and DDoS protection. A good CDN solution will help business' serve their content 24x7 and fend off DDoS attacks that they couldn’t manage in house.