Which AWS service helps users plan and track their server and application inventory migration data to AWS?

Amazon CloudWatch is a monitoring and observability service that collects and processes raw data into readable, real-time metrics, not for planning or tracking migration inventory.

AWS DataSync is a data transfer service for moving large amounts of data between on-premises storage and AWS, not for planning and tracking application inventory migration status.

AWS Migration Hub provides a single dashboard to track the progress of migrations across multiple AWS and partner migration tools, offering capabilities for discovery, planning, and tracking server and application inventory migration data.

AWS Application Migration Service (AWS MGN) is primarily a rehost (lift-and-shift) solution for migrating applications, but Migration Hub provides the overarching planning and tracking functionality across all migration tools.