Relational Database Service (RDS)
- Supports SQLServer, MySQL, MariaDB, Postgres, Oracle, and Aurora databases
- Use for Online Transaction Processing (OLTP) workloads
- Managed by AWS, you cannot SSH into the machines
- Automated Backups and Snapshots
- Read Replicas
- Use to improve performance
- Can be multi-AZ and in different regions
- Must have backups enabled
- SQLServer not supported
- Use Multi-AZ primarily for disaster recovery
- Encryption at rest is supported using KMS
- Aurora
- Two copies of data stored in a minimum of three AZs
- Aurora replicas support automated failover
- Can share Snapshots with other accounts
- Backups enabled by default
- Aurora Serverless available for infrequent, intermittent, or unpredictable workloads
