CDN
A geographically distributed network of servers that caches and delivers content from the nearest edge location, reducing latency for image delivery.
A CDN (Content Delivery Network) caches content on geographically distributed edge servers, delivering from the location nearest to each user. It is particularly effective for static assets like images, simultaneously reducing origin server load and latency.
CDN benefits for image delivery include reduced geographic latency (Tokyo users served from Tokyo edge), origin bandwidth savings, and DDoS protection. Major CDNs like CloudFront, Cloudflare, and Fastly offer automatic image optimization, performing format conversion and resizing at the edge based on device capabilities.
Combining image optimization with CDN caching delivers optimized images globally at high speed. Implementing cache busting ensures updated images are not served from stale caches.