Why Use A CDN (Content Delivery Network)? Here are 13 Ways How it Serves Your Website

11 min read

Today, the network is highly fueled with content such as videos, images, gaming, live-streaming, and most importantly e-commerce. In order to make all of this content valued, it requires to be available and accessible to global audiences securely and instantly. Reinforced by content distribution networks, it works to make your content accessible to the users anytime and everywhere across the web. Well, a CDN a.k.a content delivery network is stated to be a geographically dispersed set of multiple servers that are working together to facilitate the fast delivery of web content. It mainly functions for the quick transmission of resources required for loading web content such as JavaScript files, HTML pages, images, stylesheets, and videos.

With the passage of time, its popularity and fame continue to grow as a result of this incline in popularity now a wide range of web traffic is being served by means of the content delivery network. This may also include traffic from high traffic sites such as Netflix, Facebook, and Amazon. It is also accountable for protecting websites against common yet dangerous malicious attacks including DDOS attacks which are short for Distributed Denial of Service. Below I have provided detailed insight into DDOS attacks and its relation to CDN.

The Evolutionary History of CDN Service

No matter how many advancements have been made in CDN services but their core purpose remains to be the same. They are all about enhancing the site visitor user experience as they offer high rates of data transfer, comparatively low latency that ends-up in good response time of the end-user.

The content delivery network used to act as the network edge for end-users. Taking you back into the past, when the content delivery network was first introduced within the market at that time content used to contain GIF, webpages, and JPEG images. The CDN servers functioned to save static data and then delivered that content to site visitors on behalf of the website. This proved advantageous to both WAN infrastructure and source business’s data center as it didn’t burden them while transmitting data to the end-users.

With the gradual popularity of audio-video web content, the CDNs have to evolve for delivering that sort of content. Moreover, the organizations tend to become way more relaxed with IT services offered off sites by multiple third parties, CDNs further progressed and started to provide multiple services ranging from app delivery administration services including load balancing to firewall and many other networks and data security facilities.

Nowadays, you might discover that the CDNs distinguish themselves on the basis of types of facilities they provide also by means of the functionality and granularity.

Taking the example of some suppliers who provide services mainly focused on API management, whereas other CDN providers hereby providing high-level data security, geo-blocking features, and digital rights management. While all vendors tend to offer caching services for the static content, adding highly sophisticated management specifications for refreshing and purging cached content.

How Does the Content Delivery Network A.K.A CDN Works?

Most of the time users do not know that what they are using is a content delivery network. This happens because whenever a site’s address is entered into the search engine, the sessions are themselves redirected to the relevant content delivery network by means of domain name program. Moreover, it is able to locate its data servers by utilizing dedicated points of POPs and presence operated by the other web service providers. For the delivery of quick response time, the CDN network functions to interlink its edges by using private or dedicated lines instead of internet links.

At its edge, the user request is processed and inspected. In many cases, the static data is reviewed for its freshness and after inspection, it is delivered. In a case your organization tends to save client-facing content files including software updates or product catalogues then at first, they are fetched from the CDN data server and then sent to the user. All video files kept by a content delivery network can be transmitted and then streamed directly to the end-user without even troubling the relevant organization’s servers or it’s WAN. While it’s good to know what the CDN does, it’s just as important to know from where it does it. CDNs are all about faster delivery. It is necessary for the CDN to be geographically close to the client in order to lower latency. The content delivery network benefits your web solution in many other ways, below I have listed most of them.

Benefits of a CDN to Your Web Solution

1. Faster Website Performance

Obviously, the first and foremost motive to utilize a content delivery network because it functions to increase the speed of one’s website through an amazing approach. At the same time, it also reduces latency. By implementing a CDN the connection near the end-user is terminated, which is accountable for reducing TLS and TCP handshake’s cost. If you want to attain the best results, then you should give CDN a try for both dynamic and static content.

2.Precise Data & Analytics

The CDN is responsible for providing you with critical insights and value-adding data which can assist you in improving the quality of your services. Most CDN hosting providers offer facilities such as real-time end-user media analytics and monitoring that oversees the engagement and performance metrics while providing insights related to the actions of your audience that can lead you to formulate your marketing and sales strategy.

3. The SEO Benefits


Your website’s speed holds a lot of importance when it comes to search engine optimization as it is the most crucial factor related to the page rankings. Most of the search engines or browsers study the site’s loading time in their formulas. Our beloved Google loves websites that are fast. Moreover, in 2010 it was declared that website speed is directly related to the search engine rankings. Accelerating sites is really important because the high-speed website would help you to boost your SERPs as customers are more satisfied with high-speed websites.

Secondly, the Google image search is another SEO benefit which is frequently overlooked. When you tend to optimize your organization’s website to quick load along the CDN, it will eventually boost the frequency of the one in which search engine looks for your pictures and in turn, it enables your pictures to be widely indexed and available in Google.

4. Cost Control & Reduction

The content delivery works to decrease many unnecessary costs that a website owner usually makes including the bandwidth cost. As it significantly controls the cost of bandwidth via optimizing and caching the relevant data within various POPs. It can be said that it is really a well-organized solution that improves site performance, reduces bandwidth, manages traffic, and transmits the data across the globe through a cost-effective approach.

5. Reliability

Most of you have probably encountered your website going down at one point or another, which can be very frustrating. Whenever you plan to incorporate a 3rd party within the mix the chances of failure increase. Although, the way a content delivery network is structured it offers a great deal of reliability to its users. As mentioned earlier, the CDN requests for your website are redirected to the nearest POP available. If somehow one of these POP is down it simply transmits the request made by the user to the next available POP. This phenomenon tends to develop redundancy while ensuring less or no downtime along with quality user experience.

6.Optimize the Route and Lower Latency

A CDN resembles a GPS framework combined with the express toll streets. A content delivery network comprises of the option for locating the ideal way to be at an inaccessible area as well as the option to utilize its very own system to locate the ideal course to transmit the content as fast as could be allowed. At the point when a client loads any content from a web property including web application or website page, a progression of a link is made to be at the platform at which the content is served.

To better understand system traffic, you can relate it to a street and highway system. Small surface avenues move neighbourhood traffic around a similar territory and interstate highways move traffic into various states. When something turns out to be wrong, similar to a tanker truck accident blocking the entire path for in such sort of situation highway traffic must discover another way around. Like a roadway crossing various states, traffic regularly needs to move crosswise over various systems to arrive at its final destination. If somehow a blockage exists in a specific system, the traffic must be diverted down an alternate pathway. This procedure can be inefficient and time-consuming.

Suppose a client in San Francisco is now loading a specific site across Los Angeles. The connection here takes numerous steps, whereas, in this kind of a situation, the highly important initiative is when the network signal transmits by some telecommunications supplier situated within San Jose on its way down to the final destination. At the point when a system engineer inadvertently pours the espresso on the routing apparatus in San Jose, the supplier goes disconnected, breaking the association. At the point when this happens, the client is never again ready to load their web content except if the arranged traffic is rerouted to oblige for the new system scene. The client’s solicitation now needs to experience an alternate telecom supplier.

Since the traffic is never again ready to go through the expected system, it should rather step into some other system kept up by an alternate association. This procedure of renegotiation and exchanging systems may happen on different occasions in a system solicitation and examples like this can include latency and may push the traffic onto a clogged pathway, bringing about a deferral. A CDN of adequate size will commonly control its very own system associations by putting servers in Internet trade focuses (IXPs) and other vital areas. These streamlined system blueprints permit CDN suppliers to improve the course and decrease latency.

6. Traffic Spikes & Scalability

Traffic spike is one of the most unpredictable and amazing things that could happen to you. Whether you make it to the top charts at Reddit or making an appearance at the Shark Tank show, you need to be prepared for every kind of situation. It is common that many host providers on the web cripple at the time of high traffic. The content delivery network work here to avoid a problem like these. 

The reason for having a load balancer is to distribute the system traffic equally over various servers. load adjustment can be either equipment or programming based. A CDN here utilizes load management within the data center to convey approaching requests over the accessible server pool to guarantee that spikes in rush hour are dealt with in the most proficient way. By proficiently utilizing accessible resources, load balancing can boost the processing time and successfully use the server limit. Proper load management of the incoming traffic is the most crucial component in relieving spikes within rush hour gridlock that happens during atypical Internet action, for example, when a site is encountering a bizarrely high number of viewers or during a denial-of-service attack.

A CDN likewise uses the load balancing technique in order to make modifications rapidly and productively when the accessibility of server resources vacillates up or down. If a server comes up short and failover happens, a load balancer will divert the traffic from the failed server and convey it relatively over the rest of the available servers. This gives reliability and resiliency by improving the probability that equipment failures won’t upset the progression of traffic. At the point when another server comes online in the server center, a load balancer will proportionately expel load from different servers and raise the use of the new equipment. Programming based load administrations enable a CDN to scale load balancing limit rapidly.

7.Utilize the Anycast Routing Method

Some of the CDNs will utilize an Anycast directing technique to move the internet traffic to explicit accessible data centers. This happens to guarantee improved response time and to save the data center being overpowered with too much traffic in case of unprecedented demand, for example, during a DDoS assault.

With Anycast, different machines can have a similar IP address. At the point when any sort of request is sent to an Anycast IP address, switches will guide it to the machine on the system that is nearest. If a whole data center fizzles or is generally drained with substantial traffic, and Anycast system can react to the blackout to some degree correspondingly to how a load balancer moves traffic over numerous servers inside a server center; the information is directed away from the failure area and then it is steered towards another server center that is functional and online.

8. Better Security & DDoS Protection

A CDN also functions to offer extra security. Since more than 60% of the web traffic is now being served through the content delivery network supplier, they will relieve DDoS assaults for you on their edge servers. Other progressed security highlights incorporate Secure and Token SSL. By empowering SSL, you are guaranteeing that everything is secure between the CDN edge servers and the inception server.

DDoS assaults are right now one of the most considerable dangers to the unwavering quality of the Internet properties. Most CDNs that utilize Anycast have extra adaptability in moderating DDoS assaults. In most current DDoS assaults most compromise PCs or “bots” are utilized to structure a botnet. These compromised devices can produce a lot of web traffic that they can overpower the unicast-associated machine. With an Anycast, a part of the botnet assault traffic can be conveyed over various server centers, lessening the effect of the assault.

9. Simple Integrations

In many cases, deploying a content delivery network is not a problem as it can easily be implemented on any sort of platform within a few minutes. There is a wide range of possibilities for its integration, no matter you are running Drupal, WordPress, Joomla, or any kind of customized framework including the Zend or Laravel framework.

10. Better Conversion Rates/Sales

It has been demonstrated over and over that boosting your speed can boost lead conversion rates. This is essential because of the way that you are giving quality client experience. As it was indicated in some case study that 46% of clients won’t come back to an inadequately performing site. Also, 74% of clients will abandon the site after 5 sec of loading time. All aspects of your site ought to be enhanced, from your landing page right down to your checkout page. By utilizing a CDN you can guarantee your services are delivered quite fast across the web.

11. Lower Costs

As I have referenced before, a CDN much of the time will deal with over 60% of your site’s data transfer capacity, which consequently diminishes the load/costs onto your inception server. There is another approach to keep costs from leaving control is by empowering hotlink assurance. That also means that you can keep others from installing your content, for example, pictures on different sites. An extraordinary example of this situation was when an author on the site named Huffington Post copy-pasted pictures taken originally from The Oatmeal, which is quite a well-known comic site. This wound up gathering the Oatmeal proprietor a huge bill of $1,000 via AWS. For this situation, if hotlink insurance would have been empowered, he might be able to hinder the creator from utilizing his pictures at Huffington Post costing him a lot of cash.

12. Enhances User Experience

The customers’ experience is the main factor that can help you to improve your website’s conversion. Thus, it is clever to offer the ultimate experience to users. It is stated by Akamai that 47 % of users expect a webpage to load in less than 2 seconds. The Content Delivery Network also helps to enhance the overall experience of the customer by improving load time and performance of the web app.

13. Avail Web Host Offering CDN Services

Frankly speaking, traditional web hosting and recent technology are no more capable of fulfilling the e-commerce websites’ demands. A Managed Digital Ocean Cloud with CDN created by edge servers that are arranged all around the world, now perform an important part in improving the traditional web hosting computing resources to carry high-quality and rich hypermedia content in a consistent and profitable way. CDNs are also accountable for most of the load on websites and it also minimizes the use of resources on your website.

What is failover? How Does a CDN Failover Within Servers?

For the computing devices that need a very high degree of near consistent availability along with reliability, a failover is here utilized for the prevention of traffic being gone in a case of server unavailability. Know that whenever a server scales down, the web traffic requires to be redirected to any server which is still operational. By mechanically unburdening tasks to a standardized system or some other gadget that has available capacity, smart failover that holds the power to prevent disturbance of services.

Wrapping It All Up!

For the question “Why use a CDN?”

Well, as it can be seen in the article clearly that there are many through which a content delivery network can support your web solution. In spite of its drastic performance enhancements, its SEO advantages, better conversion rates, and most importantly a quality user experience can be demonstrated through CDN. If somehow you have missed the chance to use a CDN till now then I persuade you to give it a chance.


One thought on

Why Use A CDN (Content Delivery Network)? Here are 13 Ways How it Serves Your Website

  • Sathish Arumugam


    With the growing competition, the lousy websites and content delivery never bring prosper. Fortunately, technology is also growing to help us meet the demands. CDN is one such for any business to opt for the fastest content delivery. People have no patience to wait until any website loads. They have abundant resources available online.


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