Explanation: Amazon RDS stands for Relational Database Service, which offers easy to scale and manage rela-tional databases on the Cloud. It provides cost-efficient and resizable capacity while managing time-consuming database admin-istration tasks, freeing you up to focus on your applications and business. Amazon RDS provides you six familiar database engines to choose from, including Amazon Aurora, PostgreSQL, MySQL, MariaDB, Oracle, and Microsoft SQL Server. Reference: http://aws.amazon.com/rds/