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Content Delivery Network


What is a CDN?

A Content Delivery Network (CDN) is a geographically dispersed system of interconnected servers connected to the Internet that serve web content to end users.

Customer's content is retrieved by the CDN from the customer’s own origin server and duplicated and stored or streamed across the dispersed server network, effectively re-distributing the content from the core to the edge of the Internet.

When an end user makes a request for CDN-enabled content, complex routing and DNS algorithms intelligently establish the location of the end user and directs the request to the optimal CDN server node. The optimal serving CDN node is typically one that is nearest to the end user in network terms(network proximity is not necessarily geographically nearest), has the most bandwidth and capacity available, or maybe the least expensive serving location, or a combination.

Where engineered for performance gain, the assigned serving node of the CDN will deliver content to the end user quicker and more efficiently than the customer's own origin server - as a result of having lower network latency and higher network throughput available.

What can it do for my business?

Use of a CDN can bring a host of benefits to any Internet-orientated business. The inherent characteristics of a geographically dispersed, carrier-grade, highly connected, highly scalable, and resilient CDN infrastructure allows customers to mitigate the risks and counter the unpredictability of operating a business or service on the Internet.

Key customer advantages are as follows:

Improved End-user experience

The CDN ensures that users requested content reaches the end-user as quickly as possible having traversed the network route of least latency, lowest packet loss and least congestion.


Customer has dependable use of a network that is significantly scaled and effectively over-provisioned, capable of comfortably handling traffic surges and unpredictable rapid traffic growth that the customer may experience for their content and services.

Geographic Reach

The international geographic distribution of the CDN gives customers an active serving local presence in, or near to, every major end-user target market in the world.


Multiple active CDN nodes carrying and serving customer content minimises site timeouts and maximises site response times, mitigating the risk of server overload, server or node failure, Internet congestion or cable system failure.

Time to Market

The CDN represents a ready-made on-demand distribution network for its customers. There is no need for downtime or build-out time in order to deploy an infrastructure capable of supporting new products or services.

Customer-own Infrastructure requirement and TCO

CDN offers built-in redundancy and resilience to a customer's web operations and as such the customer only has to maintain a single or dual origin server and Internet connection(s) in a single territory. This results in significant cost savings, lower total cost of ownership (TCO) and reduced complexity across the following areas:

  • Systems Management, man power and in-house expertise
  • Hardware and software capital and operational expense
  • Network infrastructure capital and operational expense
  • Data Centre / Co-location infrastructure capital and operational expense
  • Network Security policies and procedures

In addition, use of a CDN can significantly simplify and off-set the need for customers to retain in-house expertise and an operating infrastructure designed to support non-core IT activities such a load balancing, domain name services (DNS), and gateway routing protocols (eBGP, OSPF etc).

CDN replaces all these with a utility-based, on-demand, highly flexible, highly reliable and cost-efficient content delivery infrastructure.


The CDN acts as a buffer absorbing and neutralising internet-based threats that can potentially bring down a customer's Internet services. The effects of domain squatting, distributed denial-of-service (DDoS) attacks can be mitigated by the scale and expanse of the CDN hiding and protecting the customer's origin servers.

Zohar offers premium content delivery service at very affordable bandwidth transfer rates. Using our content delivery network partners, you will improve your web site visitor experience and lower the server load, allowing your current server and hardware architecture to serve more web visitors without expensive hardware upgrades, load balancing, backup, administration and failover. Not only will your web site files be delivered faster to your end users but you will also benefit from our very low-price data transfer rates, saving thousands of dollars on monthly bandwidth bills for large web sites and portals that distribute a lot of static content files.

Our content delivery network engineers can easily setup any CND solution and deploy it in few days. Our staff will work hard with you to set-up, configure and enable content serving using our content delivery network partners.

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