Skip to Content

Introduction to Cloud 101: Run Serverless Functions Without Managing Infrastructure with AWS Lambda

By: Author Alex Lim

Posted on

Categories Amazon

Learn how AWS Lambda enables you to run serverless functions without the need to provision or manage servers. Discover the benefits of this powerful compute service for your applications.

Table of Contents

Question

Which serverless compute service lets you run functions without provisioning or managing servers?

A. Amazon DynamoDB
B. AWS Lambda
C. Amazon EC2
D. AWS Identity and Access Management

Answer

B. AWS Lambda

Explanation

The correct response option is: AWS Lambda.

AWS Lambda is a serverless computing service that is used to process snippets of code, when a Lambda function is triggered.

The other responses are incorrect because:

  • Amazon EC2 is not a serverless service.
  • Amazon DynamoDB is a serverless database service, not a computing service.
  • AWS IAM is a security service that is used to grant access of services to users.

AWS Lambda is a serverless compute service that allows you to run functions without the need to provision or manage servers. With Lambda, you can focus on writing your application code and let AWS handle the underlying infrastructure.

Here’s how Lambda works:

  1. You write your code in a supported language (such as Node.js, Python, Java, or C#) and package it into a Lambda function.
  2. You specify the amount of memory and maximum execution time for your function.
  3. You define the trigger that invokes your function, such as an HTTP request, an event from another AWS service, or a scheduled event.
  4. When the trigger occurs, AWS Lambda automatically provisions the necessary resources, runs your function, and scales it based on the incoming requests.
  5. You only pay for the compute time your function actually consumes, measured in milliseconds.

Lambda integrates seamlessly with other AWS services, allowing you to build powerful and scalable serverless applications. It abstracts away the infrastructure management, enabling you to focus on writing code and building functionality.

Some key benefits of using AWS Lambda include:

  • No server management: AWS handles the underlying infrastructure, so you don’t need to worry about provisioning, patching, or scaling servers.
  • Automatic scaling: Lambda automatically scales your functions based on the incoming requests, ensuring your application can handle varying workloads.
  • Pay-per-use pricing: With Lambda, you only pay for the compute time your functions actually consume, making it cost-effective for applications with variable or unpredictable traffic.
  • High availability and fault tolerance: AWS Lambda is designed to be highly available and fault-tolerant, with built-in redundancy and automatic failover.

In summary, AWS Lambda is a serverless compute service that enables you to run functions without the need to manage servers, making it an ideal choice for building scalable and cost-effective applications in the cloud.

AWS Introduction to Cloud 101 EDC101v1 EN US KC M06 Final Assessment practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the AWS Introduction to Cloud 101 exam and earn AWS Introduction to Cloud 101 certification.