Networking · Edge & Perimeter
CDN
Content delivery networks cache and serve content from distributed edge locations, improving latency and absorbing volumetric attack traffic.
FoundationalUpdated 2026-09-01
Overview
CDNs terminate client connections close to the user, serve cacheable assets from the edge, and fetch dynamic content from origin over optimised paths. Cache control headers and key design determine effectiveness.
Most CDNs double as security platforms, adding WAF, bot management, TLS termination and DDoS absorption in front of origin infrastructure.