AWS Technical Essentials Practice

The storage service that is most economical for data that does not require regular access is Amazon Glacier. This service is specifically designed for long-term, archival storage and provides a low-cost solution for data that is infrequently accessed.

Amazon Glacier is optimized for durability and security, making it suitable for retaining data over extended periods. It offers a cost-effective way to store large amounts of data that may not be needed on a regular basis, making it ideal for compliance data backups, archival records, and other use cases where immediate access is not a priority.

While other storage options like Amazon S3 or Elastic File System might offer features for active data and more frequent access, they come with higher costs associated with retrieval and storage. Those services are more suited for frequently accessed data and use cases requiring enhanced performance and immediate availability. Thus, for long-term, infrequently accessed data, Amazon Glacier stands out as the most economical choice.