A company needs fully managed, highly reliable, and scalable file storage that is accessible over the Server Message Block (SMB) protocol.
Which AWS service will meet these requirements?
Amazon S3
Amazon Elastic File System (Amazon EFS)
Amazon FSx for Windows File Server
Amazon Elastic Block Store (Amazon EBS)
Explanations:
Amazon S3 is an object storage service and does not support the SMB protocol directly.
Amazon Elastic File System (Amazon EFS) is a managed file storage service but primarily supports NFS, not SMB.
Amazon FSx for Windows File Server provides fully managed Windows file systems that support SMB, making it suitable for the requirements.
Amazon Elastic Block Store (Amazon EBS) is block storage for use with EC2 instances and does not provide a file storage solution over SMB.
I arrange that the answer is:
Amazon FSx for Windows File Server