CDN.

also: content delivery network · CDNs · PoP · PoPs · point of presence · points of presence · edge location · edge locations

A geographically distributed network of edge servers that caches content close to users, cutting latency and offloading the origin.

the two-minute refresher

Users connect to the nearest edge location (PoP) instead of crossing the world to your origin.
A cache hit at the edge is served directly; a miss goes to the origin once and is cached for the next user.
Cache static assets and cacheable responses; keep personalised or private data off shared caches.
Control it with Cache-Control headers, versioned URLs and purges when content changes.

also: content delivery network · CDNs · PoP · PoPs · point of presence · points of presence · edge location · edge locations

A geographically distributed network of edge servers that caches content close to users, cutting latency and offloading the origin.

Users connect to the nearest edge location (PoP) instead of crossing the world to your origin.
A cache hit at the edge is served directly; a miss goes to the origin once and is cached for the next user.
Cache static assets and cacheable responses; keep personalised or private data off shared caches.
Control it with Cache-Control headers, versioned URLs and purges when content changes.