Domain 2: Reliability and Business Continuity (16% of the exam content) - AWS Certification
Task 2.1: Implement scalability and elasticityTask 2.2: Implement high availability and resilient environmentsTask 2.3: Implement backup and restore strategies

Domain 2: Reliability and Business Continuity (16% of the exam content)

This domain accounts for 16% of the exam content.

Task 2.1: Implement scalability and elasticity

  • Create and maintain Auto Scaling plans.

  • Implement caching.

  • Implement Amazon RDS replicas and Amazon Aurora Replicas.

  • Implement loosely coupled architectures.

  • Differentiate between horizontal scaling and vertical scaling.

Task 2.2: Implement high availability and resilient environments

  • Configure Elastic Load Balancing (ELB) and Amazon Route 53 health checks.

  • Differentiate between the use of a single Availability Zone and Multi-AZ deployments (for example, Amazon EC2 Auto Scaling groups, ELB, Amazon FSx, Amazon RDS).

  • Implement fault-tolerant workloads (for example, Amazon Elastic File System [Amazon EFS], Elastic IP addresses).

  • Implement Route 53 routing policies (for example, failover, weighted, latency based).

Task 2.3: Implement backup and restore strategies

  • Automate snapshots and backups based on use cases (for example, RDS snapshots, Backup, RTO and RPO, Amazon Data Lifecycle Manager, retention policy).

  • Restore databases (for example, point-in-time restore, promote read replica).

  • Implement versioning and lifecycle rules.

  • Configure Amazon S3 Cross-Region Replication (CRR).

  • Perform disaster recovery procedures.