Resilient Architecture III

Question 11

A taxation company offers an API to its customers to automate short, complex tax computation inquiries. The computation inquiry takes no longer than 13 minutes. The company has noticed high traffic during the holiday season, which has caused a slow response to customers. The company needs to design a reliable and scalable solution.

What should a solutions architect do to meet these requirements with the least operational overhead?

A. Create a REST API using Amazon API Gateway that accepts the requests. Use AWS Lambda for tax computations.

B. Create a REST API hosted on an EC2 instance. API accepts the requests and uses different EC2 instances in the Autoscaling group for tax computations.

C. Deploy an Application Load Balancer (ALB) with two instances behind it hosting a REST API on the EC2 instance. The EC2 instances perform the required tax computations.

D. Deploy an Application Load Balancer (ALB) with an ECS cluster hosting a REST API. Use the ECS cluster to perform the required tax computations.