What is a CDN?

 
What is a CDN?
 
 
CDN stands for Content Delivery Network, which is a group of servers to deliver your website's files such as HTML pages, javascript files, images, and videos to your visitors in the fastest time.
 
 
Why A CDN?
 
 
1. Improve website loading time
CDN can reduce the bounce rates and speed up your site by distributing content to website visitors using a nearby CDN server.
 
2. Reduce bandwidth costs
CDN helps website owners save the hosting costs by reducing the amount of data on the origin server. 
 
3. Enhance site security
A CDN improves the website's security by providing DDoS mitigation to avoid DDoS attacks. 
 
 
Best CDN Providers
 
 
1. Cloudflare
Cloudflare is popularly known as the best free CDN provider. It has the largest networks of 165 data centers that span over 200 cites in more than 100 countries.
 
2. Amazon Cloudfront
 
Amazon Cloudfront is a CDN offered by Amazon Web Services. It operates from over 100 edge locations on five continents. CloudFront offers a free usage tier for one year or pays as you go.
 
3. Fastly
 
Fastly is one of the best providers in terms of speed. It is not just a CDN but also offers advanced features for site optimization and security.
 
4. Alibaba Cloud CDN
 
 
Alibaba Cloud provides comprehensive global cloud computing services to both international online businesses and also Alibaba's eCommerce ecosystem. The services operate on a pay-as-you-go basis and include data storage, relational databases, big-data processing, Anti-DDoS protection, and content delivery networks (CDN).
 
5. Baidu Yunjiasu
 
 
As a partner of Cloudflare, Baidu offers a localized version of CDN service called Yunjiasu. It provides the same features and functionality as Cloudflare but tailored for the China market. It also offers a free version. The domain that applies for it needs an ICP filing.