Answer: Amazon FSx for Windows File Server

## Explanation **Amazon FSx for Windows File Server** is the correct choice because: - **SMB Protocol Support**: FSx for Windows File Server natively supports the Server Message Block (SMB) protocol, which is required for mounting file shares as mapped drives on Windows systems - **Multi-instance Access**: Multiple EC2 instances can simultaneously access the same file share - **Windows Integration**: Designed specifically for Windows environments and integrates seamlessly with Active Directory - **Mapped Drive Compatibility**: Perfectly suited for the mapped drive requirement **Why other options are incorrect:** - **Amazon EFS**: Uses NFS protocol, not SMB protocol - **Amazon S3**: Object storage service, not designed for file share mounting as mapped drives - **AWS DataSync**: Data transfer service, not a file sharing service The requirement specifically calls for SMB protocol support and mapped drive functionality, which makes FSx for Windows File Server the ideal solution.

Author: Ritesh Yadav