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Q49 Single choice

A company has a payment gateway that processes millions of daily transactions on AWS. The solution uses Amazon ECS with a single Amazon EC2 instance that is not configured for auto scaling and an Amazon Aurora PostgreSQL database. All the solution's resources are deployed in the same Availability Zone. The company uses Amazon Route 53 to manage its domain name resolution. The company needs to implement a new strategy to make the application more highly available.

Which solution will meet this requirement with the LEAST operational overhead?

A
Set up an Amazon RDS Proxy in front of the Aurora database. Modify the Aurora database to a Multi-AZ DB cluster by adding a read replica in a second Availability Zone.
B
Configure Amazon ECS services to distribute tasks across multiple Availability Zones. Create a cross-Region read replica of the Aurora database in a second AWS Region. Create a script to perform a manual failover process.
C
Configure Amazon ECS services on AWS Fargate to distribute tasks across multiple Availability Zones. Modify the Aurora database to a Multi-AZ DB cluster by adding a read replica in a second Availability Zone.
D
Deploy the gateway application into a second AWS Region. Migrate the Aurora database to an Aurora global database. Configure Route 53 for active-active gateway request routing.

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