AWS RDS Amazon Relational Database Service (RDS) takes care of provisioning, patching, backups, and failover for relational databases. Supports MySQL, PostgreSQL, MariaDB, Oracle, SQL Server, and Amazon Aurora. Core Concepts - DB Instance — an isolated database environment in the cloud - Multi-AZ — synchronous standby replica in another AZ for high availability - Read Replica — asynchronous copy for read scaling - Parameter Group — engine configuration settings - Subnet Group — defines which subnets RDS can use - Aurora — AWS-native engine, MySQL/PostgreSQL compatible, 5x faster Provisioning…