A company is migrating a multi-tier on-premises application to AWS. The app uses a single-node MySQL database and a multi-node web tier. The company wants to minimize application changes during migration and improve resiliency afterward. Which combination of steps will meet these requirements? (Choose two.)
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Correct answer: Migrate the web tier to Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer., Migrate the database to an Amazon RDS Multi-AZ deployment..
Why this is the answer
Migrating the web tier to Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer (ALB) improves resiliency by distributing traffic across multiple instances and automatically replacing unhealthy ones. The ALB also provides advanced routing capabilities. Migrating the database to an Amazon RDS Multi-AZ deployment ensures high availability and fault tolerance for the database without requiring application changes, as RDS manages replication and failover. Incorrect options: Migrating the database to Amazon EC2 instances in an Auto Scaling group behind a Network Load
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