A centralized group of users has outgrown on-premises file storage. The company wants to expand file storage for this group while keeping the benefit of local shared performance. What is the MOST operationally efficient AWS solution?

Deploying an AWS Storage Gateway (File Gateway) is the most operationally efficient solution because it provides on-premises applications with file-based access to virtually unlimited cloud storage (Amazon S3) while maintaining local shared performance through caching. Users can continue to use standard file protocols (NFS or SMB) to access files, minimizing changes to their workflow. Creating an S3 bucket for each user and mounting it with a filesystem tool would be complex to manage and wouldn't offer the local shared performance or standard file protocol access. Moving users to Amazon WorkSpaces and WorkDocs is a desktop virtualization solution, not primarily a shared file storage solution, and would be a significant operational shift. Launching an EC2 instance with an EBS volume would provide shared storage but would be limited by the single EBS volume's capacity and performance, requiring manual scaling and management, which is less operationally efficient than Storage Gateway's managed service.