A company needs a disaster recovery strategy for its critical application hosted on AWS. The strategy must ensure the application can withstand a complete failure of an entire AWS Region with minimal downtime and data loss. Which approach should the company implement?
Deploy the application to a single Availability Zone and take frequent snapshots.
Deploy the application across multiple Availability Zones within a single AWS Region.
Use Amazon CloudFront to cache content across multiple edge locations.
Deploy the application across multiple AWS Regions in an active-active configuration.
To withstand the complete failure of an AWS Region, a multi-Region strategy is required. An active-active configuration across multiple Regions provides the highest level of availability and resilience, allowing traffic to be served from a healthy region without interruption, thus ensuring minimal RTO and RPO. Deploying across multiple Availability Zones protects against failures within a single Region but does not protect against a Region-wide outage. A single Availability Zone deployment offers no protection from AZ or regional failures. Using Amazon CloudFront is a content delivery strategy to reduce latency, not a disaster recovery strategy for regional failure.
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