Implement Amazon RDS replicas and Amazon Aurora Replicas.
Hybrid storage solutions to meet business requirements
Identifying the purposes of load balancers
How to integrate various AWS services to create ETL pipelines
Implement loosely coupled architectures.
Deciding when to use EC2 hosted databases or AWS managed databases
Storage services with appropriate use cases (for example, Amazon S3, Amazon Elastic File System [Amazon EFS], Amazon Elastic Block Store [Amazon EBS])
Identifying relational databases (for example, Amazon RDS, Amazon Aurora)
Differentiate between horizontal scaling and vertical scaling.
Event-driven architecture
Identifying NoSQL databases (for example, DynamoDB)
Storage types with associated characteristics (for example, object, file, block)
Identifying memory-based databases
How to configure AWS services for data pipelines based on schedules or dependencies
Configure Elastic Load Balancing (ELB) and Amazon Route 53 health checks.
Identifying database migration tools (for example AWS Database Migration Service [AWS DMS], AWS Schema Conversion Tool [AWS SCT])