AWS CloudFront CDN

AWS CloudFront is a Content Delivery Network (CDN) with 600+ edge locations globally. When a user requests content (HTML, CSS, JS, images, API responses), CloudFront serves it from the nearest edge location instead of the origin server. If the content is cached, the user gets it instantly. If not, CloudFront fetches from origin, caches it, and returns it. Result: global users see sub-100ms latency, origins see 70-90% fewer requests, and transfer costs drop.