Which solution meets these requirements MOST cost-effectively?
Store all the objects in S3 Standard with an S3 Lifecycle rule to transition the objects to S3 Glacier after 30 days.
Store all the objects in S3 Standard with an S3 Lifecycle rule to transition the objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 30 days.
Store all the objects in S3 Standard with an S3 Lifecycle rule to transition the objects to S3 One Zone-Infrequent Access (S3 One Zone-IA) after 30 days.
Store all the objects in S3 Intelligent-Tiering with an S3 Lifecycle rule to transition the objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 30 days.
Explanations:
S3 Glacier provides low-cost storage but is not designed for objects that need to be readily available. Accessing objects from Glacier requires a retrieval process that can take time, making it unsuitable for frequent access needs in the first 30 days.
S3 Standard-IA is suitable for infrequent access while still allowing for quick retrieval. It balances cost and access needs, making it a cost-effective solution for objects that are likely to be accessed frequently in the first 30 days and less so afterward.
S3 One Zone-IA is less durable than S3 Standard and is not recommended for critical data that needs to be retained over a longer period. It also does not provide the same level of availability as the other options, making it less suitable for this scenario.
While S3 Intelligent-Tiering automatically moves objects between tiers based on access patterns, transitioning to S3 Standard-IA after 30 days is unnecessary since objects are already more likely to be infrequently accessed. It may not be as cost-effective as directly transitioning to S3 Standard-IA after the initial 30 days.
It seems to me that the answer is:
Store all the objects in S3 Standard with an S3 Lifecycle rule to transition the objects to S3 Standard-Infrequent Access (S3 Standard-IA) after 30 days.