Amazon RDS
Relational Database Service — a managed service for relational databases like MySQL and PostgreSQL.
Amazon Relational Database Service (RDS) is a managed service that runs popular relational database engines — MySQL, PostgreSQL, MariaDB, Oracle, SQL Server, and Amazon Aurora — on AWS infrastructure. Because RDS handles OS patching, automated backups, Multi-AZ failover, and read replica provisioning, teams can focus on schema and query design rather than server maintenance.
The key CLF-C02 distinction is SQL versus NoSQL: RDS is the go-to when structured data and ACID transactions are required, while DynamoDB serves schema-less, high-throughput workloads. Aurora is often presented as a separate choice, but it is an engine offered through RDS, not a standalone database category.
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