In AWS Database Migration Service, what type of databases can data be migrated between?

The AWS Database Migration Service (DMS) is designed to facilitate the migration of data between different types of database engines, regardless of whether they are located on-premises, in the cloud, or within a different geographic region. The key feature of AWS DMS is its ability to handle migrations between heterogeneous (different types of database systems) and homogenous (the same type of database systems) database engines.

For instance, you can migrate data from an Oracle database to an Amazon Aurora database or from a MySQL database hosted on-premises to Amazon RDS for MySQL. This flexibility is essential for organizations that may be upgrading, consolidating, or changing their database environments.

The other options do not provide the accurate scope and capabilities of AWS DMS. For example, focusing only on on-premises databases or solely on AWS services would limit the potential use cases that businesses can leverage when migrating their databases. Moreover, restricting migrations to similar database types overlooks the significant utility of DMS in enabling companies to transition to more suitable legacy or modern database technologies.