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Amazon Relational Database Service (Amazon RDS) is a web service that makes it easy to set up, operate, and scale a relational database in the cloud. It provides cost-efficient and resizable capacity while managing time-consuming database administration tasks, freeing you to focus on your applications and business.
If you plan to use Amazon RDS, it is advisable to configure Amazon RDS across multiple Availability Zones. This enables a synchronous standby replica of your database to be provisioned in a different Availability Zone. To keep both databases in sync, updates to your database instance are synchronously replicated across Availability Zones. In case of a failover scenario, the standby is promoted to be the primary and will handle the database operations. Running your database instance in multiple Availability Zones safeguards your data in the unlikely event of a database instance component failure or service health disruption in one Availability Zone.
The instructions for configuring your AWS Elastic Beanstalk application with Amazon RDS depend on the programming language you use.