9 benefits of using CDN (Content Delivery Network)

2019/10/07 12:00

(VINADATA – Professional Cloud Services Provider) CDN stands for Content Delivery Network, which translates to “mạng phân phối nội dung”. It refers to a global server system (the number of servers varies depending on each service provider) that stores copies of static website content. These copies are then distributed to multiple different servers called Points of Presence (PoP) and from these PoPs, the content is delivered to users when they visit the website. In this article, we will not discuss on how CDN works, but rather focus on the benefits of using CDN.

1. Your website will significantly improve in the reliability and responsiveness

If your website has high frequency of visits and a high conversion rate leading to increased revenue, issues related to response latency and access speed tend to deeply impact the business results derived from your website. A few seconds faster or slower can make a difference in successfully converting online revenue. A reliable CDN service should optimize website loading speed, and ensure online transactions to be carried out smoothly and stably.

2. CDN enables global accessibility

If your customers come from all around the world, but your infrastructure is located in only one country, customers might experience delay. In this case, if you don't have the capability to set up data centers in different countries, global CDNs can help the customer accessing your website faster because they will be served by local edge servers in those countries.

3. CDN can save costs

Renting a CDN can significantly help businesses/individual save on infrastructure costs; instead of investing in infrastructure and service providers globally. A global CDN eliminates the need to pay for expensive storage overseas, thus saving a considerable amount of money for your business. A global CDN provides a single platform to handle all unique operations, working across multiple regions at a reasonable cost. CDNs are also recommended for companies with tight budgets.

4. 100% uptime

CDN providers are always prepared with numerous servers in various local and international Data Centers. Therefore, CDNs have built-in monitoring mechanisms to detect any operational issues with servers and automatically redirect users to other available servers. As a result, CDN-powered websites deliver a 100% uptime experience, even during major power outages, hardware failures, or network issues.


5. Reduce server loads
How can CDN reduce your website's server load? Instead of having users querying directly for website resources, they are routed through the distributed CDN servers worldwide that hold the same website resource information. This helps reduce the load on your server from static resource requests from the website as well as free up high bandwidth costs.


6. 24/7 customer support
Reputable CDN service providers are often known for their excellent customer support. They have a dedicated support team always available, ready to assist and address any issues you may encounter.  Having a hotline support team is a wise business decision because you're not just paying for cloud services, but you're investing in a comprehensive set of services that help your business thrive on a global scale.


7. Increase in concurrent users
Improving website loading speed and availability in multiple regions with CDN help increase the conversion rate. As the famous saying goes when considering user traffic: “1-second delay leads to a 7% decrease in user conversion.”

For example, if the bandwidth of a server you have set up can only handle 100GB of traffic when loaded with 1000 users, those exceeding this limit would have to wait to access your website's online services. However, with a CDN, if these 1000 users come from 10 different regions, the 100GB bandwidth load will be distributed evenly across the 10 regions, allowing you to load more users concurrently.

8. Limit DDoS attacks
Beside causing significant economic losses by disrupting online business operations, DDoS attacks can also have a severe impact on the reputation and image of the company.


CDNs can help protect your website from DDoS attacks because the core infrastructure is shielded by firewalls behind the CDN infrastructure. This is especially helpful when a website is at risk of a distributed denial-of-service (DDoS) attack, which has the potential to bring down your website immediately. Since CDNs are the first point of contact with customers, they are also the first point of attack. Most CDNs are built with a distributed architecture, which allows them to minimize the impact of a DDoS attack.

9. Reports/ Analysis
Content Delivery Networks (CDNs) not only provide fast resource distribution services but they can also offer invaluable analytics insights to uncover trends that can drive advertising sales and reveal strengths and weaknesses of your online business.