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AWS Certified Solutions Architect - Professional · AWS
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Option C provides an automated, resilient, and low-maintenance solution using S3 CRR and CloudFront origin groups to meet the requirement of multi-Region resiliency with the least operational overhead.
C. Configure replication on the S3 bucket in us-east-1 to replicate objects to the S3 bucket in the second Region. Set up an Amazon CloudFront distribution with an origin group that contains the two S3 buckets as origins.
Why not D ? D. Configure replication on the S3 bucket in us-east-1 to replicate objects to the S3 bucket in the second Region. If failover is required, update the application code to load S3 objects from the S3 bucket in the second Region: Manual Failover: This option involves manual updates to the application code in the event of a failover, which adds operational overhead and complexity. CloudFront provides automatic failover and load balancing, making it a more streamlined solution.