A CDN (Content Delivery Network) is a globally distributed network of servers designed to deliver static content - images, videos, CSS, JS, fonts and other assets - from the closest geographical location to the user. The goal of a CDN is to reduce loading time, improve performance, and decrease the load on the origin server.

How a CDN works:

1. Static files are cached on edge servers around the world.

2. When a user visits the website, the request is routed to the closest edge server.

3. Content is delivered with minimal latency and maximum speed.

4. The origin server handles only dynamic requests.

Benefits of using a CDN:

• Faster loading speed

• Improved SEO performance

• Reduced server load

• Enhanced protection against DDoS attacks

• Consistent global performance

• Bandwidth and traffic optimization

Popular CDN providers include Cloudflare, Amazon CloudFront, Akamai, Fastly, and DigitalOcean Spaces.