CDN (Content Delivery Network)
A CDN replicates content across servers distributed worldwide and serves each visitor from the nearest point. Reduced latency, relieved origin, absorption of traffic peaks and attacks.
In practice
For an international site, it reshapes geography: a Tokyo visitor receives from Tokyo what a Paris server would have made them wait for. Our deployments place editorial sites behind a CDN by default — static pages with long cache, dynamic HTML with short cache, invalidated on each release.