2Reliability and Business Continuity

• 2.1Scalability and High Availability

  Understand HA operations: load balancers and Auto Scaling groups (spread across AZs, self-healing via health checks, min/desired/max), and scaling policies.

• 2.2Database Availability and Scaling

  Understand RDS Multi-AZ (HA via automatic failover) vs. read replicas (read scaling) and when to use each.

• 2.3Backup and Disaster Recovery (RPO/RTO)

  Understand EBS/RDS snapshots, centralized management with AWS Backup (schedules, cross-region/account copy), and choosing a DR strategy via RPO/RTO.

• 2.4In-scope services for reliability and business continuity

  A roundup of in-scope SOA-C03 services for reliability and business continuity—databases, storage, and disaster recovery.