Cloudfront Net !!hot!!

Start with the AWS free tier (1 TB outbound for 12 months) and enable AWS Budget alerts immediately.

| Term | Meaning | |------|---------| | | Source of truth (S3, EC2, ALB, HTTP server) | | Distribution | The CDN configuration (URL like https://xxxx.cloudfront.net ) | | Edge Location | Where cached content is stored | | TTL (Time To Live) | How long edge caches content | | Cache Behavior | Rules for paths (e.g., /images/* vs /api/* ) | | Invalidation | Removing cached files before TTL expires | cloudfront net

: The first time a file is requested, CloudFront fetches it from the origin (like an Amazon S3 bucket ). It then stores a copy at the edge location. Future users in that same region receive the cached copy instantly. Start with the AWS free tier (1 TB

After updating origin files, CloudFront still serves old cached copies until TTL expires. To purge immediately: Future users in that same region receive the