If your infrastructure is already on Amazon, it simply makes the most sense to use a tool officially provided by them as an additional service, rather than having to rely on a third-party solution.
AWS Database Migration Service offers a scalable, stable solution for data migrations with maintenance managed by AWS. It supports features like real-time synchronization and Change Data Capture, simplifying releases. While its cost-effectiveness and easy setup appeal, challenges include delays in support, bandwidth dependency, and complex integrations with Microsoft and Hadoop. Migrating data types between databases, such as Oracle to PostgreSQL, and reducing the two-minute live duplication lag require attention.