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AWS Certified Solutions Architect study material · question 169 of 500

How does CloudFront origin failover differ from a Region-level failover?

  1. It permanently switches all traffic to the secondary origin
  2. It requires a Route 53 health check to trigger
  3. It works only between origins in the same Availability Zone
  4. It retries per request, and later requests still try the primary origin first
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Answer: D. It retries per request, and later requests still try the primary origin first

Origin failover is per request: a failed request is retried against the secondary origin, while subsequent requests continue to go to the primary.

Source: Disaster recovery options in the cloud (Amazon Web Services) — Pilot light — traffic management

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