Content Delivery Networks (CDN)

Content Delivery Networks (CDN) Overview

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.

Top Rated Content Delivery Networks (CDN) Products

TrustRadius Top Rated for 2022

These products won a Top Rated award for having excellent customer satisfaction ratings. The list is based purely on reviews; there is no paid placement, and analyst opinions do not influence the rankings. Read more about the Top Rated criteria.

Content Delivery Networks (CDN)  TrustMap

TrustMaps are two-dimensional charts that compare products based on trScore and research frequency by prospective buyers. Products must have 10 or more ratings to appear on this TrustMap.

Content Delivery Networks (CDN) Products

(1-25 of 46) Sorted by Most Reviews

The list of products below is based purely on reviews (sorted from most to least). There is no paid placement and analyst opinions do not influence their rankings. Here is our Promise to Buyers to ensure information on our site is reliable, useful, and worthy of your trust.

Cloudflare
Customer Verified
Top Rated

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).

Akamai

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

Amazon CloudFront

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

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

Cloudimage offers a way to optimize and accelerate images for the web. This solution automates the transformation and optimization of images on the fly and accelerates their distribution via the Content Delivery Network (CDN). WIth Cloudimage, the vendor states web pages are faster…

StackPathCDN

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 Deliver@Edge

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

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.

CacheFly CDN

CacheFly offers a content delivery network.

ImageKit.io

ImageKit.io 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, with ImageKit, users can: - Simplify image management…

CDN77

CDN77 is a Content Delivery Network with 35+ PoPs worldwide. According to the vendor, CDN77 aims to be an innovation leader and was the first CDN to implement HTTP/2, Brotli compression algorithm or QUIC.The vendor offers 14Tbps+ network capacity which can handle website acceleration,…

G-Core Labs

G-Core Labs provides a wide 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…

Limelight Content Delivery

Limelight Content Delivery is the content delivery network from Limelight Networks headquartered in Scottsdale.

OnApp CDN

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

Nokia Velocix Media Delivery Platform

Nokia offers the Velocix Content Delivery Network (CDN), called Velocix Media Delivery Platform, since their 2016 acquisition of Alcatel-Lucent and its services, which itself acquired Velocix in 2009.

Multi CDN (MetaCDN)

Multi CDN (formerly MetaCDN) is a content delivery network from Streamshark (also formerly known as MetaCDN).

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.

Verizon Media Platform

EdgeCast was a content delivery network (CDN), acquired by Verizon in 2013. It is now the foundation of the Verizon Media Platform, an integrated platform designed to support live events and related events, with security features (e.g. DDoS protection, application firewall, etc.…

Uploadcare

Uploadcare is a global end-to-end cloud platform aimed at disrupting the traditional CDN market through Adaptive Delivery technology that converts visual-first customer experience into revenue for companies. Founded in 2012, the vendor boasts Uploadcare has become a technological…

Sirv

Manage and deliver your images with Sirv's high-speed image customization and optimization CDN. All images hosted on Sirv are managed and shared with your team and collaborators. According to the vendor, each and every visitor receives the most optimal image for their device, thanks…

Lumen CDN

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…

Jet-Stream Pro

Jet-Stream is a multi-CDN streaming platform for leading broadcasters, publishers, sports clubs, events, studios, video producers and brands. Jet-Stream’s multi-CDN integration enables availability, performance and scalability with active request routing (no DNS lag) and intelligent…

IBM Cloud Content Delivery Network

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

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.