CloudFront origin failover uses an origin group with a primary and secondary origin; if the primary returns errors, CloudFront automatically serves from the secondary — improving availability of your content.
The tell
When a scenario needs high availability for content delivery — automatically fall back to a backup origin if the primary S3 bucket or server fails — that’s origin failover with an origin group. It’s the CloudFront-layer resilience pattern.
Test yourself
You want CloudFront to automatically serve content from a backup S3 bucket if the primary origin returns errors. What do you configure?
- A second CloudFront distribution
- A CloudFront origin group with failover
- Route 53 latency routing
- S3 Cross-Region Replication only
👉 Click to reveal the answer & explanation
Correct answer: B. A CloudFront origin group with a primary and secondary origin fails over automatically on primary errors. A second distribution (A) doesn’t auto-fail-over within one; Route 53 latency routing (C) optimizes speed, not origin failover; replication (D) copies data but doesn’t switch origins.
Related topics
Amazon CloudFront · CloudFront caching · S3 lifecycle & replication
Ready to pass the AWS Solutions Architect Associate (SAA-C03)?
Stop guessing whether you’re ready. Our full-length, exam-realistic practice exams put you through the exact question style you’ll face — with a detailed explanation behind every answer, so you learn why, not just what.
- ✓ 6 full-length practice exams
- ✓ A detailed explanation for every single question
- ✓ Realistic, scenario-based questions — not memory dumps
- ✓ Lifetime access, kept current for 2026
Get the SAA-C03 Practice Exams →or try 25 free questions first