Which storage solution meets these requirements MOST cost-effectively?

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In: SAA-C02
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A company has an application that collects data from loT sensors on automobiles.The data is streamed and stored in Amazon S3 through Amazon Kinesis DataFirehose.The data produces trillions of S3 objects each year.Each morning, the company uses the data from the previous 30 days to retrain a suite of machine learning (ML) models.Four times each year, the company uses the data from the previous 12 months to perform analysis and train other ML models.The data must be available with minimal delay for up to 1 year.After 1 year, the data must be retained for archival purposes.

Which storage solution meets these requirements MOST cost-effectively?

Use the S3 Intelligent-Tiering storage class. Create an S3 Lifecycle policy to transition objects to S3 Glacier Deep Archive after 1 year.

Use the S3 Intelligent-Tiering storage class. Configure S3 Intelligent-Tiering to automativally move objects to S3 Glacier Deep Archive after 1 year.

Use the S3 Standard-Infrequent Access (S3 Standard-IA) storage class. Create an S3 Lifecycle policy to transition objects to S3 Glacier Deep Archive after 1 year.

Use the S3 Standard storage class. Create an S3 Lifecycle policy to transition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 30 days, and then to S3 Glacier Deep Archive after 1 year.

Explanations:

S3 Intelligent-Tiering automatically moves data based on access patterns, but it doesn’t support automatic transition to Glacier Deep Archive after a fixed duration like 1 year. A lifecycle policy is required to transition data after 1 year.

S3 Intelligent-Tiering does not have the capability to automatically transition objects to Glacier Deep Archive after 1 year. It moves objects based on access frequency but not by a set time.

S3 Standard-IA is designed for infrequent access, but it is not the most cost-effective solution for this scenario. The data is actively used in the first 30 days and then periodically retrained, so transitioning to Standard-IA and then Glacier Deep Archive would not optimize cost effectively.

S3 Standard is ideal for frequently accessed data (like for retraining), and then transitioning to Standard-IA after 30 days and to Glacier Deep Archive after 1 year minimizes costs while meeting the access and archival requirements.

2025-10-08

1 Comment

  1. Timothy
    Author

    I classify that the answer is:
    Use the S3 Standard storage class. Create an S3 Lifecycle policy to transition objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 30 days, and then to S3 Glacier Deep Archive after 1 year.

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