AWS Database Migration Service is now available to all customers. Using AWS Database Migration Service allows you to migrate databases to AWS easily,securely, and cost-effectively, or with no downtime. There is no need to install any drivers or applications; you can commence a database migration with just a few clicks in the AWS Management Console. Because you only pay for the compute resources used during the migration process,a terabyte-sized database can be migrated for as runt as $3.
Source: amazon.com