CDN uses several servers in different geographic places, which improves the delivery and streaming (dynamic) and static content. Users sending a request are addressed to the nearest server, which helps to increase page loading speed, boost bandwidth and provide content regardless of Network failures, traffic drops and emergencies. Basing on the algorithm and node number, a network selects the best options to provide performance and resist traffic fluctuations.

Even if you have high-speed connection, no one can avoid loading lags, failures, poor content quality, etc.. This is especially obvious, when loading the information from far located servers. CDN minimizes latency, optimizes content delivery speed and broadens bandwidth for every user.

Content Delivery Networks Improve Search Engine Rankings

Google and other search engines rate slowly loading sites badly, which, in its turn, affects site effectiveness and number of users. There is no use in fast connection, if data is delivered slowly. If customers who spend a lot of money on Internet connection and various equipment don’t get enough page load speed and decent content quality (in case with videos), they most probably leave a site, which also damages the reputation. CDN provides protection against content loss and image and video quality degradation.

Merits of CDNs

If you are an IT business developer your site must deliver various kinds of data, and deliver it quickly. CDN boosts page load speed and has other merits, including the following:

  • Improve Heavy Traffic transmission and exclude failures and jitters

Video streaming sometime suffers from pauses and jitters because of transmission lags, but CDN improves video and image downloading, improving users’ experience.

  • Minimize Packet Loss

Streaming quality improves dramatically, when CDNs are used.

  • Faster Loading

Though Internet speed constantly improves, content weight also get bigger. People need instant page loading, which can be provided by CDNs. That is proves by various experiments and studies.

  • File Mirroring

File mirroring serves to protect content in cases of some unexpected circumstances. For instance, if a server in one location was damaged accidentally, there are other servers to keep the information.

  • Optimize Live Delivery

Many services providing sharing of millions of video files are popular thanks to adding video elements to the content. How does it help?

  • Live events attract users and generate traffic.
  • Various organizations can perform online tutorials and broadcast live events.
  • Broadcasting in real time is a part of marketing strategy which is aimed at increasing of auditory.
  • Enable Linear Networks

Today, all companies have an opportunity to broadcast in the same manner as the major networks, having 24/7 access to CDN delivery globally.

  • Support Video on Demand

Organizations may also download libraries, online tutorials and other advertising and marketing tools online.

  • Scalability

Although modern mobile apps and other new technologies require a lot of resources, large CDNs can fulfill all the requirements, expanding online presence.

No disadvantages?

Not exactly. Of course, application of any CDN means spending additional sums of money, but in the final shortening of routes is paid off. However, there are still some problems arising during CDN usage:

  • New Points of Failure

Delivery chains of CDNs face some new potential failures unknown before.

  • Sharing Resources

Since delivery networks have to serve thousands of clients, their efficiency depends on traffic peaks and the resources used by them.

  • Geographical Choice Considerations

Before starting implementing a CDN, website owners have to reseatch the market to define the location of target auditory. Thus, servers placed in Asia or Europe will be hardly efficient for American users.

  • Content Management Problems

To update content throughout the whole system of servers, companies may need some special management systems. For instance, in some cases special widgets, applications or players may be required to help customers download the content. Moreover, customers’ requirements may differ from region to region.

Lack of Direct Control

Any changes to CDN must be made with the help of providers, not directly. Otherwise, developers and editors may face some problems.

How to choose an optimal CDN

This is the question every web master has to face sooner or later. There are different private and Internet-based networks, some of which may integrate with Online Video Platforms, which makes video distribution possible. But this is not the only factor that must be taken into account:

  • Not all CDNs support high definition video. If you need it, ask provider for more details.
  • You may also require transcoding changes that will help to open various video files on certain players (Silverlight, Flash,iDevice and QuickTime). Use the most suitable players for your work.
  • If your site is optimized for mobile users, select a CDN supporting mobile content delivery.
  • Consider Digital Rights Management in case of working with content protected by license.
  • Many applications require real-time analytics of content delivery, so owners need to find optimal ways of network analysis and ability reporting.

Samples of Popular Content Delivery Networks

There are many companies providing CDNs, and it is very hard to make the right choice. One of the most trustworthy companies is This marketplace provides various CDNs for reasonable prices and, which is important, supplying decent customer support.


CDN is a perfect way to boost the speed and quality of content delivery (images, media files, video, documents, etc) and improve search ranking of site, which, in its turn, increases customer loyalty and attracts auditory. Undoubtedly, such service appears to be more expensive than single-server hosting, but it is worth every cent. First, customers enjoy fast processing and seamless video file loading. Owners who want their companies to be leaders and provide ideal services choose CDNs for delivering content globally without delay.

Since search platforms like Google tend to penalize sites for slow loading, optimization of content delivery geographically increases the number of visitors and protects sites from service disruptions. CDN delivers content via hundreds of servers, defining the shortest way to an end-user, also basing on traffic level. Besides, SSL certificates used guarantee absolute protection of customer’s information.

The reason why some online shoppers leave their carts without completing orders is slow speed of site. It plays crucial role for the number of customers and visitors, and this aspect also influences search ratings. Better loading time improves the quality of site functioning, attracting auditory, making more profit and keeping site more relevant for search engines.