CloudFront is Amazon’s CDN — a content delivery network. It caches your content at edge locations worldwide so users get it from nearby instead of waiting on a round trip to your origin. Faster for users, lighter load on your servers.
What the exam wants
Know it caches at edge locations to cut latency, works with S3 and EC2 origins, and pairs with AWS WAF and Shield for security. Global users complaining about slow static content? CloudFront.
Test yourself
A website’s images load slowly for international users because everything is served from one Region’s S3 bucket. What improves performance most?
- Put CloudFront in front of the S3 bucket
- Move the bucket to a larger storage class
- Enable S3 versioning
- Switch the bucket to a private ACL
👉 Click to reveal the answer & explanation
Correct answer: A. CloudFront caches the images at edge locations near users worldwide, ending the long trip to the origin Region. Storage class (B), versioning (C), and ACLs (D) don’t affect global delivery speed.
Related topics
Amazon S3 · Amazon Route 53 · Amazon VPC
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