- CDN is a network of distributed servers placed worldwide.
- Stores cached copies of content (images, videos, files) closer to users.
- Reduces latency by serving content from the nearest server.
- Reduces load on the origin server.
- Improves Availability and reliability with multiple edge servers.
- Handles traffic spikes smoothly.
- Commonly used for static assets, streaming, and APIs.
- Examples: Cloudflare, Akamai, AWS CloudFront.