A large multinational company runs a timesheet application on AWS that is used by staff across the world. The application runs on Amazon EC2 instances in an Auto Scaling group behind an Elastic Load Balancing (ELB) load balancer, and stores in an Amazon RDS MySQL Multi-AZ database instance. The CFO is concerned about the impact on the business if the application is not available. The application must not be down for more than two hours, but he solution must be as cost-effective as possible. How should the Solutions Architect meet the CFO's requirements while minimizing data loss?

Question

Quizplus · Accepted Answer

The CFO's requirement is to have the application up and running in less than two hours, and the solution should be cost-effective. Option C meets these requirements by creating a read replica in another region and copying snapshots of the database to that region. When an issue occurs, the read replica can be promoted to a primary instance and the application can be recreated using the latest snapshot. This solution is cost-effective because it only requires the creation of a read replica and the copying of snapshots, which are both relatively inexpensive operations.

A Large Multinational Company Runs a Timesheet Application on AWS