AWS Certified Cloud Practitioner (CLF-C02)Cloud Technology and ServicesEasy
A company wants its CloudFront distribution to cache and serve static website content to users with the lowest possible latency, regardless of where in the world the users are located. Which AWS infrastructure component enables this by caching content physically close to end users?
- AAWS Regions
- BEdge locations
- CAvailability Zones
- DVPC subnets
Show answer & explanationAnswer & explanation
Correct answer: B. Edge locations
Edge locations are globally distributed data centers used by CloudFront (and Route 53) to cache content near end users, reducing latency for content delivery.
Why the other options are wrong
- A. Regions are geographic areas containing multiple Availability Zones, not the caching layer for CloudFront.
- C. Availability Zones are isolated data centers within a Region used for compute/storage redundancy, not content caching.
- D. VPC subnets are network segments within a Region and are unrelated to global content caching.
Edge Locations
Globally distributed AWS sites used by CloudFront and Route 53 to cache content and reduce latency close to end users.
- Far more numerous than Regions/AZs
- Used for CloudFront caching and Route 53 DNS resolution
- Improve performance by serving content near the end user
Memory trick: Edge locations are the CDN's front doors closest to users.