What is CDN?
Content delivery network or content distribution network (CDN) is system of multiple servers distributed across the globe. CDN provides the content with faster with high performance. Use of CDN is recommended, because it not only serves the content faster, but it also saves your server bandwidth and causes less load on your server.
You can see the Improvement in website speed after using CDN:
5 Best Free CDN to Speed Up Your Website
Cloudflare is one of the best free CDN services available. With more than 23 data centers around the world Cloudflare CDN claims to decrease the loading time of your website by 60%. Cloudflare uses “Anycast” technology to to route website visitors to the nearest data centers.
CoralCDN is in existence since 2004, one of the oldest free and open peer to peer based CDN, receiving about 50 million requests daily from few million unique clients. CoralCDN servers the content from 300-400 server located across the globe. It is one of the most reliable CDN services.
As I explained in this post, there are a lot of free CDN services available online, you can choose the best for you depending upon your need and type of website. But, if you have a website with large amount of traffic, I recommend you to use Paid CDN like MaxCDN.