Amazon Relational Database Service (Amazon RDS) is a managed SQL database service provided by Amazon Web Services (AWS) . It is a cloud computing solution that aims to facilitate setting up, deploying, and scaling a relational database in the cloud. Amazon RDS supports an array of database engines, including Amazon Aurora, MySQL, MariaDB, PostgreSQL, Oracle, and SQL Server. It is designed to simplify the setup, operation, and scaling of a relational database for use in web and mobile applications.

Amazon RDS is a managed database service that automates many management tasks, freeing users to focus on their applications and users. It handles many of the onerous tasks of database management, such as migration, patching, and backup and recovery. Amazon RDS is recommended over Amazon EC2 as the default choice for most database deployments.

Some key features of Amazon RDS include:

• Scalability: Amazon RDS is designed to support growing applications with high availability, throughput, and storage scalability.
• Security: Amazon RDS offers automated patching and security monitoring.
• Performance: Amazon RDS includes a Performance Insights dashboard that makes it easier for users to analyze and troubleshoot the performance of their relational databases.

Amazon RDS is useful for a variety of applications, including online retailing, mobile and online gaming, and finance applications. It is a pay-as-you-go service, and pricing depends on the type of hosting chosen.