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AWS Certified Solutions Architect - Associate · AWS
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C. Migrate the PostgreSQL database to an Amazon RDS for PostgreSQL DB instance. Create a read replica in another Region. This option provides cross-region availability with minimal operational overhead, as RDS manages the replication process for you.
Multi AZ is not supported in to diffrent region read Raplica is supported in to diffrent region So I am go with the option C
Option C involves setting up read replicas in another region, which provides cross-region availability but may introduce additional complexity in managing replication and monitoring. B. Migrate the PostgreSQL database to an Amazon RDS for PostgreSQL DB instance with Multi-AZ: High Availability: Amazon RDS Multi-AZ deployments provide high availability and failover support for DB instances. With Multi-AZ, Amazon RDS automatically provisions and maintains a synchronous standby replica in a different Availability Zone (AZ). In the event of a failure, Amazon RDS automatically fails over to the standby replica, ensuring data availability and minimal downtime. + Cross-Region Replication.