AWS Certified Solutions Architect - Associate
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A survey company has gathered data for several years from areas in the United States. The company hosts the data in an Amazon S3 bucket that is 3 TB in size and growing. The company has started to share the data with a European marketing firm that has S3 buckets. The company wants to ensure that its data transfer costs remain as low as possible.
Which solution will meet these requirements?
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UAnonymous
A
Configure the Requester Pays feature on the company's S3 bucket.
B
Configure S3 Cross-Region Replication from the company's S3 bucket to one of the marketing firm's S3 buckets.
C
Configure cross-account access for the marketing firm so that the marketing firm has access to the company's S3 bucket.
D
Configure the company's S3 bucket to use S3 Intelligent-Tiering. Sync the S3 bucket to one of the marketing firm's S3 buckets.
Explanation:
Explanation
Correct Answer: A - Configure the Requester Pays feature on the company's S3 bucket.
Why this is correct:
- Requester Pays feature shifts the cost of data transfer from the bucket owner to the requester (in this case, the European marketing firm).
- When the marketing firm accesses data from the company's S3 bucket, they will pay for the data transfer costs instead of the survey company.
- This directly addresses the requirement to keep the company's data transfer costs as low as possible.
Why other options are incorrect:
B. Configure S3 Cross-Region Replication from the company's S3 bucket to one of the marketing firm's S3 buckets.
- This would incur data transfer costs for the company when replicating data from US to Europe.
- The company would pay for both data transfer and storage costs for the replicated data.
C. Configure cross-account access for the marketing firm so that the marketing firm has access to the company's S3 bucket.
- While this allows access, the company would still pay for data transfer costs when the marketing firm downloads data.
- Data transfer costs would be incurred by the bucket owner (the survey company).
D. Configure the company's S3 bucket to use S3 Intelligent-Tiering. Sync the S3 bucket to one of the marketing firm's S3 buckets.
- S3 Intelligent-Tiering optimizes storage costs, not data transfer costs.
- Syncing data would incur data transfer costs for the company.
- This solution doesn't address the core requirement of minimizing data transfer costs.
Key AWS Concepts:
- Requester Pays: When enabled, the requester pays for data transfer and request costs instead of the bucket owner.
- Data Transfer Costs: In AWS, data transfer OUT from AWS to the internet incurs costs, and these costs vary by region.
- Cross-Region Data Transfer: Transferring data between regions (US to Europe) incurs additional costs.
This solution is the most cost-effective for the survey company as it transfers the cost burden to the marketing firm that is accessing the data.
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