Q397.A company wants to refactor its retail ordering web application that currently has a load-balanced Amazon EC2 instance fleet for web hosting database API services and business logic. The company needs to create a decoupled scalable architecture with a mechanism for retaining failed orders
While also minimizing operational costs.Which solution will meet these requirements?
A.Use Amazon S3 for web hosting with Amazon API Gateway for database API services. Use Amazon Simple Queue Service (Amazon SQS) for order queuing. Use Amazon Elastic Container Service (Amazon ECS) for business logic with Amazon SQS long polling for retaining failed orders. B.Use AWS Elastic Beanstalk for web hosting with Amazon API Gateway for database API services. Use Amazon MQ for order queuing. Use AWS Step Functions for business logic with Amazon S3 Glacier Deep Archive for retaining failed orders. C.Use Amazon S3 for web hosting with AWS AppSync for database API services. Use Amazon Simple Queue Service(Amazon SQS) for order queuing Use AWS Lambda for business logic with an Amazon SQS dead-letter queue for retaining failed orders. D.Use Amazon Lightsail for web hosting with AWS AppSync for database API services. Use Amazon Simple Email Service (Amazon SES) for order queuing. Use Amazon Elastic Kubernetes Service (Amazon EKS) for business logic with Amazon Elasticsearch Service (Amazon ES) for retaining failed orders.正确答案C
