This SAA-C03 practice question tests your understanding of design resilient architectures. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. A key principle to apply: s3 Cross-Region Replication (CRR) copies objects to a different AWS Region.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A ticket booking system stores uploaded documents in S3. The business requires a copy in another AWS Region for disaster recovery. What should be configured? The design must avoid adding custom operational scripts.
S3 lifecycle transition to Glacier Flexible Retrieval
Why wrong: Lifecycle transition changes storage class, not Region.
An EBS snapshot schedule
Why wrong: EBS snapshots do not apply to S3 objects.
S3 Cross-Region Replication with versioning enabled
CRR asynchronously replicates objects to a bucket in another Region and requires versioning.
A CloudFront distribution
Why wrong: CloudFront caches content but is not a durable DR copy.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
S3 Cross-Region Replication with versioning enabled
S3 Cross-Region Replication (CRR) automatically replicates objects from a source bucket in one AWS Region to a destination bucket in another Region, providing a disaster recovery copy without custom scripts. Enabling versioning on both buckets is a prerequisite for CRR, ensuring that all object versions are replicated and that the destination bucket can maintain a complete history of changes.
Key principle: S3 Cross-Region Replication (CRR) copies objects to a different AWS Region.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
S3 lifecycle transition to Glacier Flexible Retrieval
Why it's wrong here
Lifecycle transition changes storage class, not Region.
An EBS snapshot schedule
Why it's wrong here
EBS snapshots do not apply to S3 objects.
S3 Cross-Region Replication with versioning enabled
Why this is correct
CRR asynchronously replicates objects to a bucket in another Region and requires versioning.
Related concept
S3 Cross-Region Replication (CRR) copies objects to a different AWS Region.
A CloudFront distribution
Why it's wrong here
CloudFront caches content but is not a durable DR copy.
Common exam traps
The trap here is that candidates may confuse S3 Lifecycle policies (which only manage storage tiers within a region) with cross-region replication, or mistakenly think CloudFront's edge caching provides a durable cross-region copy, when in fact CloudFront does not replicate the original S3 object to another region.
Detailed technical explanation
S3 CRR uses asynchronous replication, meaning there is a brief window (typically seconds to minutes) where the source and destination buckets may be inconsistent; this is acceptable for most DR scenarios but not for strict synchronous replication. CRR also supports replication of delete markers and metadata if configured, and it requires IAM roles with appropriate permissions to read from the source and write to the destination bucket. In a real-world scenario, if a user uploads a ticket document to the us-east-1 bucket, CRR automatically copies it to the eu-west-2 bucket, ensuring data survives a regional outage without any operational scripts.
Key takeaway
S3 Cross-Region Replication (CRR) copies objects to a different AWS Region.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Review s3 Cross-Region Replication (CRR) copies objects to a different AWS Region., then practise related SAA-C03 questions on the same topic to reinforce the concept.
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FAQ
Design Resilient Architectures — This question tests Design Resilient Architectures — S3 Cross-Region Replication (CRR) copies objects to a different AWS Region..
The correct answer is: S3 Cross-Region Replication with versioning enabled — S3 Cross-Region Replication (CRR) automatically replicates objects from a source bucket in one AWS Region to a destination bucket in another Region, providing a disaster recovery copy without custom scripts. Enabling versioning on both buckets is a prerequisite for CRR, ensuring that all object versions are replicated and that the destination bucket can maintain a complete history of changes.
Review s3 Cross-Region Replication (CRR) copies objects to a different AWS Region., then practise related SAA-C03 questions on the same topic to reinforce the concept.
S3 Cross-Region Replication (CRR) copies objects to a different AWS Region.
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Last reviewed: Jun 11, 2026
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