AWS Serverless Compute

Answer - B.

The AWS Documentation mentions the following:

AWS Lambda is a compute service that lets you run code without provisioning or managing servers.

AWS Lambda executes your code only when needed and scales automatically, from a few requests per day to thousands per second.

For more information on AWS Lambda, please refer to the below URL:

The correct answer is B. AWS Lambda.

Explanation:

AWS Lambda is a serverless compute offering from AWS. It is a compute service that lets you run your code without provisioning or managing servers. With Lambda, you can simply upload your code and it will automatically scale to meet the demands of your application, without any additional effort on your part. Lambda supports multiple programming languages, including Python, Node.js, Java, and C#.

AWS EC2 (A) is a traditional virtual machine (VM) compute offering from AWS. With EC2, you are responsible for provisioning and managing the VMs. EC2 provides you with complete control over your computing resources, including the ability to choose your operating system, configure networking, and install software.

AWS SNS (C) is a messaging service from AWS that allows you to send and receive messages between different components of your application. SNS is used for messaging and communication between distributed systems, applications, and services.

AWS SQS (D) is a message queuing service from AWS that enables decoupling of components of a cloud application. SQS allows you to send, store, and receive messages between software components at any volume, without losing messages or requiring other services to be available.

In summary, among the given options, AWS Lambda is the only serverless compute offering from AWS, and the other options are different services offered by AWS for messaging, queuing, and virtual machine computing.