AWS Certified Solutions Architect - Associate
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A company seeks to migrate a multi-tiered, RESTful service-based application from on-premises to AWS Cloud, aiming to enhance performance and address issues of transaction loss during tier overload. Which solution is most operationally efficient for modernizing the application and resolving these challenges?
A
Implement Amazon API Gateway with AWS Lambda for application layer transactions and Amazon SQS for inter-service communication.
B
Leverage Amazon CloudWatch to assess performance metrics, identifying peak server utilization, and scale EC2 instances accordingly.
C
Employ Amazon SNS for messaging in an EC2 Auto Scaling group, with CloudWatch monitoring to dynamically adjust scaling based on queue length.
D
Utilize Amazon SQS for messaging in an EC2 Auto Scaling group, with CloudWatch to trigger scaling in response to communication failures.