A site runs in two Regions. Users should be directed to the secondary Region automatically when health checks detect the primary Region's endpoint is unhealthy. Which Route 53 feature accomplishes this?
A.Weighted routing policy
Weighted routing splits traffic by proportion; it does not model primary/secondary failover.
B.Failover routing policy with health checks
Correct. Failover routing + health checks reroute users automatically.
C.Geolocation routing policy
Geolocation routes by user geography, not endpoint health.
D.A CNAME record with a low TTL pointing at both Regions
A CNAME can point to only one target; DNS alone cannot monitor health without a routing policy.
Why this answer
Route 53 failover routing evaluates health checks on the primary record and returns the secondary record when the primary is unhealthy — the standard DNS-based regional failover pattern.
Correct answer: B · Last reviewed 2026-10-25
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