AWS Certified Solutions Architect - Associate
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A company stores raw collected data in an Amazon S3 bucket. The data is used for several types of analytics on behalf of the company's customers. The type of analytics requested determines the access pattern on the S3 objects.
The company cannot predict or control the access pattern. The company wants to reduce its S3 costs.
Which solution will meet these requirements?
Other
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UAnonymous
A
Use S3 replication to transition infrequently accessed objects to S3 Standard-Infrequent Access (S3 Standard-IA)
B
Use S3 Lifecycle rules to transition objects from S3 Standard to Standard-Infrequent Access (S3 Standard-IA)
C
Use S3 Lifecycle rules to transition objects from S3 Standard to S3 Intelligent-Tiering
D
Use S3 Inventory to identify and transition objects that have not been accessed from S3 Standard to S3 Intelligent-Tiering
Explanation:
Explanation
Correct Answer: C - Use S3 Lifecycle rules to transition objects from S3 Standard to S3 Intelligent-Tiering
Why this is the correct solution:
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Unpredictable access patterns: The company cannot predict or control access patterns, which makes S3 Intelligent-Tiering the ideal choice. S3 Intelligent-Tiering automatically moves objects between two access tiers (frequent and infrequent) based on changing access patterns.
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Cost optimization: S3 Intelligent-Tiering monitors access patterns and automatically moves objects that have not been accessed for 30 consecutive days to the infrequent access tier, saving costs without retrieval fees.
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No operational overhead: Unlike manual identification or inventory-based approaches, S3 Intelligent-Tiering works automatically without requiring monitoring or manual intervention.
Why other options are incorrect:
- Option A (S3 replication): S3 replication is for copying objects across buckets/regions, not for cost optimization based on access patterns.
- Option B (Lifecycle to S3 Standard-IA): S3 Standard-IA has retrieval fees and minimum storage duration charges, which could be costly if access patterns are unpredictable.
- Option D (S3 Inventory + manual transition): This requires manual intervention and monitoring, which doesn't address the unpredictable nature of access patterns effectively.
Key AWS Service Features:
- S3 Intelligent-Tiering: Designed for data with unknown, changing, or unpredictable access patterns
- Automatic tiering: No retrieval fees, no operational overhead
- Monitoring fee: Small monthly monitoring and automation fee per object
- Ideal use case: Exactly matches the scenario described - unpredictable analytics access patterns
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