Which AWS service will meet these requirements?

Explanations:

AWS DataSync is primarily used for transferring large amounts of data between on-premises storage and AWS storage services, such as Amazon S3. It does not facilitate the migration of entire server instances or operating systems.

AWS Database Migration Service (AWS DMS) is designed specifically for migrating databases to AWS. It does not provide functionality for migrating entire servers or applications, which makes it unsuitable for transferring a Windows Server instance.

AWS Application Discovery Service helps organizations discover and track their on-premises applications for migration planning. While it assists in the assessment phase, it does not perform the actual migration of servers or applications to AWS.

AWS Application Migration Service automates and streamlines the migration of applications from on-premises environments to AWS. It allows the direct conversion of existing servers to run natively on AWS infrastructure without the need for additional virtualization, making it the appropriate choice for this scenario.