What service does AWS offer for database migration?

AWS Database Migration Service (DMS) is specifically designed to facilitate the migration of databases to AWS services. It enables users to seamlessly migrate their databases to Amazon RDS, Amazon EC2, or Amazon Redshift with minimal downtime. DMS supports heterogeneous migrations, allowing data to be moved between different database engines, such as Oracle to MySQL, and it can also handle continuous data replication, making it an essential tool for organizations looking to move their data while ensuring high availability.

The other services listed do not specialize in database migration. For example, Amazon RDS Migration Tool isn't an official offering; instead, RDS itself is a managed database service that provides automated backup and scaling but does not focus specifically on migration. Amazon Aurora is a relational database engine compatible with MySQL and PostgreSQL and is not a migration service. AWS Snowball, on the other hand, is a physical data transport solution that helps in transferring large amounts of data to AWS but is not dedicated to database migration processes. Thus, AWS DMS is the standout choice for those looking to migrate databases effectively to the AWS cloud.