What You'll Be Tested On
- High availability with multiple Availability Zones, load balancing, and Auto Scaling
- Backup and restore planning with AWS Backup, snapshots, vaults, and lifecycle policies
- Disaster recovery strategies, RPO/RTO tradeoffs, failover, and restore validation
- Database resilience with RDS Multi-AZ, Aurora, read replicas, snapshots, and maintenance windows
- Quota awareness, health checks, operational readiness, and resilience testing
Key AWS Services in This Domain
Exam Tips for Domain 2
Multi-AZ improves availability; multi-Region design is usually about disaster recovery.
Backups are useful only if they can be restored within the target RTO. Watch for restore testing requirements.
Use Route 53 failover routing when DNS-level recovery is required across endpoints.
For RDS, Multi-AZ is high availability and read replicas are primarily read scaling or DR promotion targets.
Practice Domain 2 Questions
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