Back to Glossary
Cloud

CDN (Content Delivery Network)

A network of servers distributed globally that delivers web content to users from the closest location for faster loading.

A Content Delivery Network (CDN) is a geographically distributed network of proxy servers and data centers that work together to provide fast delivery of internet content.

How CDNs Work

When you host your website on a single server in one location, users far from that server experience slower load times. A CDN solves this by caching copies of your content on servers (called “edge servers” or “points of presence”) around the world.

When a user requests your website:

  1. The CDN routes the request to the nearest edge server
  2. If cached content is available, it’s served immediately
  3. If not, the edge server fetches it from your origin server and caches it

Benefits of Using a CDN

  • Faster load times: Content served from nearby locations
  • Reduced bandwidth costs: Caching reduces origin server load
  • Better reliability: Traffic distributed across multiple servers
  • DDoS protection: Many CDNs include security features
  • Improved SEO: Page speed is a ranking factor

Common CDN Providers

  • Cloudflare (popular for WordPress)
  • AWS CloudFront
  • Google Cloud CDN
  • Fastly
  • Akamai

When to Use a CDN

A CDN is beneficial for almost any website, but especially important for:

  • Sites with global audiences
  • Media-heavy websites (images, videos)
  • E-commerce stores
  • High-traffic applications

Need Help With Cloud?

Our team has decades of experience with cloud technologies. We're here to help.