A Solutions Architect is designing a web application for document sharing. The users will upload documents that are then made available to other users. There will be tens of thousands of these documents.

What is the MOST cost-effective storage solution?

A. Amazon EFS

B. Amazon S3

C. Amazon Glacier

D. Amazon EBS

A. Amazon EFS

Explanation:

Amazon Elastic File System (Amazon EFS) offers a complete, flexible, highly scalable NFS file system for use with on-site resources and AWS Cloud services.

It is constructed to measure to terabytes of data on demand without interrupting programs, automatically growing and shrinking as you add and erase documents, eradicating the need to provide and manage growth capacity.