Answer: Amazon FSx for Windows File Server

## Explanation **Amazon FSx for Windows File Server** is the correct choice because: - **Fully managed**: AWS handles all the administrative tasks including hardware provisioning, software configuration, patching, and backups - **Highly reliable**: Provides built-in redundancy and automatic failover capabilities - **Scalable**: Can scale storage capacity and performance independently - **SMB protocol support**: Specifically designed to support the Server Message Block (SMB) protocol, which is the standard file sharing protocol for Windows environments **Why the other options are incorrect**: - **Amazon S3**: Object storage service, not file storage; uses REST APIs, not SMB protocol - **Amazon EFS**: File storage service but uses NFS protocol (Network File System), not SMB protocol - **Amazon EBS**: Block storage service for use with EC2 instances, not a standalone file storage service accessible over SMB Amazon FSx for Windows File Server is specifically optimized for Windows-based applications and provides native Windows file system features, making it the ideal choice for SMB protocol requirements.

Author: Ritesh Yadav