For a new application, you need to build up the logic tier and data storage tier in AWS. The whole architecture needs to be serverless so that designers can quickly deploy the application without the need to manage servers. Which of the following AWS services would you choose?

Answer options:

A.Logic tier: “Amazon Cognito + Lambda”. Data Storage tier: “Amazon RDS”
B.Logic tier: “API Gateway + Lambda”. Data Storage tier: “Amazon DynamoDB”
C.Logic tier: “API Gateway + Lambda”. Data Storage tier: “Amazon Redshift”
D.Logic tier: “Elastic Beanstalk”. Data Storage tier: “Amazon Aurora”

Correct Answer – B
The key to the question is that the architecture should be serverless. For AWS serverless multi-tier architectures, please refer to https://d1.awsstatic.com/whitepapers/AWS_Serverless_Multi-Tier_Architectures.pdf.
Option A is incorrect: Because Amazon Cognito is not suitable for the logic tier, and Amazon RDS is not a serverless service.
Option B is CORRECT: Because both API Gateway/Lambda and Amazon DynamoDB are serverless so that the process of deploying servers is simplified.
Option C is incorrect: Amazon Redshift is a data warehouse service and is not serverless.
Option D is incorrect: Because Elastic Beanstalk utilizes EC2 instances as its computing resources are not a serverless service.