A company is designing a new document management system on AWS. Documents uploaded to Amazon S3 must be retained for 7 years for compliance. During the first 30 days, documents are accessed frequently. After 30 days, they are rarely accessed but must be retrievable within minutes. After 1 year, they are almost never accessed and a retrieval time of 12 hours is acceptable. Documents must not be deleted before 7 years. Which combination of actions meets these requirements MOST cost-effectively? (Select THREE)

Answer options:

Store newly uploaded documents in the S3 Standard storage class.

Create an S3 Lifecycle policy to transition objects to S3 Standard-IA after 30 days, and to S3 Glacier Deep Archive after 365 days.

Enable S3 Object Lock in Compliance mode with a retention period of 7 years.

Create an S3 Lifecycle policy to transition objects to S3 Glacier Flexible Retrieval after 30 days.

Enable S3 Object Lock in Governance mode with a retention period of 7 years.

Use S3 Intelligent-Tiering for the entire lifecycle.

How to approach this question

Map the access patterns to S3 storage classes and the retention requirement to Object Lock modes.

Full Answer

Use S3 Standard for initial storage. Use S3 Lifecycle policies to transition to S3 Standard-IA after 30 days, and S3 Glacier Deep Archive after 1 year. Apply S3 Object Lock in Compliance mode for 7 years.

S3 Standard is for frequent access. Standard-IA provides fast retrieval for infrequent access. Glacier Deep Archive is the cheapest for long-term archiving (12-hour retrieval). Object Lock Compliance mode guarantees immutability.

Common mistakes

Choosing Glacier Flexible Retrieval for the 30-day tier, missing the 'within minutes' requirement.

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