Content Delivery Network (CDN)
A globally-distributed network of edge servers that cache and serve a site's static assets close to users — the single biggest perf win for international sites.
In long form.
A CDN sits in front of an origin server and caches static assets (HTML, CSS, JS, images, fonts) at hundreds of edge locations worldwide. Users fetch from the nearest edge instead of crossing oceans to the origin. Beyond performance, CDNs absorb DDoS attacks, terminate TLS at the edge, run security rules (WAF), and increasingly run compute at the edge (Cloudflare Workers, Vercel Edge Functions). Major providers: Cloudflare, Fastly, AWS CloudFront, Akamai, Vercel.
Every production deploy of ours runs through a CDN — usually Vercel's edge network or Cloudflare in front of static origins. The latency win for international users is dramatic: a Sydney user fetching from a US-only origin sees 500ms+ TTFB; through a CDN edge, it drops to under 50ms.
Talk to us about your engagement.
Discovery calls are free. Scope, timelines, and pricing are quoted after we understand what you’re solving.