A company migrates a Windows application to EC2. It requires a managed shared file system using SMB, Windows ACLs, and integration with the company's Active Directory. Application changes must be minimal. Which storage service best meets these requirements?

1. Amazon FSx for Windows File Server with the appropriate Active Directory integration.
2. Instance store volumes on separate EC2 instances, without a shared file service.
3. Amazon EFS using only its native NFS interface.
4. Amazon S3 accessed through an object SDK, with no application changes.