Each availability zone is designed to be isolated from failures in other zones and provides low-latency, cost-effective network connectivity to other AZs within the same region. This high availability across multiple zones is the first line of defense against geographic and environmental risks and ensures that services running in multi-AZ deployments should withstand an AZ failure. legal-i uses the multi-AZ deployment mode for Amazon RDS (Amazon Relational Database Service). In a multi-AZ deployment, Amazon RDS provisions and maintains a synchronous standby replica in a different AZ within the same region to provide redundancy and failover capability. The AZ failover is automated and typically takes 60-120 seconds, ensuring that database operations can resume as quickly as possible without administrative intervention.