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, but it does not gather information about on-premises infrastructure such as hostname, IP address, or MAC address.

AWS Application Migration Service helps migrate applications from on-premises data centers to AWS, but it does not specifically gather infrastructure information like hostname, IP address, or MAC address.

AWS Application Discovery Service is designed to gather information about on-premises servers, including hostname, IP address, and MAC address. It helps organizations plan their migration to AWS by providing insights into the existing infrastructure.

AWS Database Migration Service (AWS DMS) is focused on migrating databases to AWS, but it does not collect detailed information about the on-premises infrastructure such as hostname, IP address, or MAC address.