A financial institution must retain transaction records for compliance purposes. The data is rarely accessed, but auditors may request it at any time and require retrieval within minutes. Which Amazon S3 storage class minimizes monthly storage cost while still providing millisecond-level access to the records?
Amazon S3 Glacier Instant Retrieval delivers the lowest storage cost for infrequently accessed data that still needs immediate, millisecond access. It stores objects across at least three Availability Zones for eleven-nines durability, provides the same low-latency performance as S3 Standard, and is up to 68 percent cheaper per GB than S3 Standard-IA. Glacier Flexible Retrieval is cheaper than Standard-IA but requires an asynchronous restore that can take minutes to hours. S3 Standard-IA offers instant access but costs more per GB than Glacier Instant Retrieval. S3 One Zone-IA is lower-cost but stores data in a single AZ, which may not meet financial-services resilience requirements.
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AWS Cloud Practitioner CLF-C02
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