A company needs to deploy a PostgreSQL database into Amazon RDS. The database must be highly available and fault tolerant. Which AWS solution should the company use to meet these requirements?
By choosing Amazon RDS with multiple Availability Zones, the company can benefit from the automatic synchronous replication of the database across multiple data centers in different Availability Zones. This setup provides redundancy and ensures that the database remains accessible even if an entire Availability Zone becomes unavailable due to a failure or outage. In such cases, Amazon RDS automatically fails over to the standby replica in another Availability Zone, minimizing downtime and ensuring high availability of the database.
https://aws.amazon.com/rds/features/multi-az/
"Highly available, durable relational databases deployed across up to three Availability Zones (AZs)"
"In an Amazon RDS Multi-AZ deployment, Amazon RDS automatically creates a primary database (DB) instance and synchronously replicates the data to an instance in a different AZ. When it detects a failure, Amazon RDS automatically fails over to a standby instance without manual intervention."
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