Multi-AZ

RDS:

• Multi-AZ: aws rds describe-db-instances | grep MultiAZ

• Amazon regions: Multi-Region

• https://aws.amazon.com/about-aws/whats-new/2022/03/amazon-rds-multi-az-transaction-commit-latency/
• Nov 2021 Multi-AZ DB cluster deployments https://aws.amazon.com/blogs/database/readable-standby-instances-in-amazon-rds-multi-az-deployments-a-new-high-availability-option/

Related

• RDS
• single-AZ: AWS RDS Single-AZ RTO
• Amazon RDS Read Replicas (Oct 2010)

See also

• AWS SLA, Single-AZ, Multi-AZ
• AWS Availability Zone (AZ), Terraform: availability zone, Data Source: aws_availability_zones, Single-AZ, Multi-AZ