CDN
A globally distributed cache that serves static assets from a point of presence near each user.
Definition
A Content Delivery Network replicates static assets — images, CSS, JS bundles — to edge servers around the world so users fetch them from a nearby location. Common CDNs: Cloudflare, Fastly, AWS CloudFront, Bunny. Many CDNs also act as reverse proxies offering TLS termination, WAF, and bot management for the origin server.
When to use
See also
- TLS — The protocol that encrypts HTTP and other connections — what the lock icon in browsers actually means.
- WAF — A reverse-proxy filter that blocks common web exploits before they reach the origin server.