A Solutions Architect needs to use AWS to implement pilot light disaster recovery for a three-tier web application hosted in an on-premises datacenter.
Which solution allows rapid provision of working, fully-scaled production environment?
A. Continuously replicate the production database server to Amazon RDS. Use AWS CloudFormation to deploy the application and any additional servers if necessary.
B. Continuously replicate the production database server to Amazon RDS. Create one application load balancer and register on-premises servers. Configure
ELB Application Load Balancer to automatically deploy Amazon EC2 instancesfor application and additional servers if the on-premises application is down.
C. Use a scheduled Lambda function to replicate the production database to AWS. Use Amazon Route 53 health checks to deploy the application automatically to Amazon S3 if production is unhealthy.
D. Use a scheduled Lambda function to replicate the production database to AWS. Register on-premises servers to an Auto Scaling group and deploy the application and additional servers if production is unavailable.
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