ACloud Guru Certified Cloud Practitioner Practice Exam

What AWS feature should you use to automate the transfer of infrequently accessed S3 data to Glacier?

1. Bucket Policy

2. S3 Lifecycle Policy

3. Database Migration Service

4. Cross Origin Resource Sharing (CORS)

The correct answer is: S3 Lifecycle Policy

The automation of transferring infrequently accessed data from Amazon S3 to Amazon Glacier is best achieved using an S3 Lifecycle Policy. This feature allows you to define rules that automatically transition objects between different storage classes, such as from S3 Standard or S3 Infrequent Access to Glacier after a specified period of time. By setting up a Lifecycle Policy, organizations can effectively manage their storage costs by ensuring that data that is not accessed frequently is moved to a more cost-effective storage solution, like Glacier, where it can be stored at a lower price point. This process not only automates the movements between storage classes but also helps in compliance and data management strategies, ensuring that data retention policies are being followed without manual intervention. Other options, such as Bucket Policy, Database Migration Service, and Cross Origin Resource Sharing (CORS), do not facilitate the automated transfer of data between storage classes. Bucket Policies control access permissions to S3 buckets, Database Migration Service is geared towards database migrations rather than object storage management, and CORS is focused on allowing web applications to interact with resources in a different origin, which does not apply to managing storage lifecycle. Therefore, S3 Lifecycle Policy is the correct and most efficient choice for this requirement.