Explanation:
The correct answer is A: S3 Intelligent-Tiering. This storage class is designed to optimize costs by automatically moving data to the most cost-effective access tier based on changing access patterns, without any impact on retrieval times. Since the data must be immediately available and access patterns change rapidly, S3 Intelligent-Tiering is the best choice. Other options like S3 Glacier Instant Retrieval, S3 Standard, and S3 Standard-IA either do not optimize costs as effectively for variable access patterns or may have higher retrieval times or costs for infrequently accessed data.
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A company exports a database daily to Amazon S3, with object sizes ranging from 2 GB to 5 GB. The access pattern is highly variable. The data must be immediately available for 3 months without increased retrieval time. Identify the most cost-effective S3 storage class for this scenario.
A
S3 Intelligent-Tiering
B
S3 Glacier Instant Retrieval
C
S3 Standard
D
S3 Standard-Infrequent Access