A company is planning to build an application using the services available on AWS. This application will be stateless in nature, and the service must have the ability to scale according to the demand. Which compute service should be used in this scenario?

Answer options:

A.AWS DynamoDB
B.AWS Lambda
C.AWS S3
D.AWS SQS

Correct Answer - B
The following content from an AWS Whitepaper supports the usage of AWS Lambda for this requirement:
A stateless application is an application that needs no knowledge of previous interactions and stores no session information. Such an example could be an application that, given the same input, provides the same response to any end-user. A stateless application can scale horizontally since any request can be serviced by any of the available compute resources (e.g., EC2 instances, AWS Lambda functions).
For more information on AWS Cloud best practices, please visit the following URL:
https://d1.awsstatic.com/whitepapers/AWS_Cloud_Best_Practices.pdf