AWS Lambda Brief Guide

Over 200 services are available through Amazon Web Services (AWS). AWS Lambda, on the other hand, continues to stand out for a variety of reasons. With the help of this AWS Lambda lesson, you will be able to better understand the service and determine whether it will meet your computing requirements.

During this session, we’ll go through what AWS Lambda actually is, how it works, how it compares to EC2, use cases, benefits, limits, and other details.

What Exactly Is AWS Lambda?

AWS Lambda is the AWS platform’s event-driven serverless computing solution. Event-driven functions are those that automatically do computations in response to triggers, which are various inputs. However, the AWS Lambda ecosystem goes well beyond what is commonly referred to as “functions as a service” (FaaS). Later on, we’ll talk more about event-driven functions.

Lambda’s serverless computing allows programmers to focus on writing and executing code rather than on administration.

These activities include, for example, ordering server resources from a cloud provider, keeping servers in tip-top shape, manually adjusting RAM, CPU, and memory resources, and patching security holes.

With AWS, your developers don’t have to worry about a thing. As a result, they’ll be able to focus on building code that provides smooth service delivery for your clients. The only thing your programmers have to do is send their code to Amazon Web Services (AWS) and have it deployed for the use cases you specify.

For the purposes of developing and running cloud-based operations quickly and cost-effectively, think of AWS Lambda as a completely managed service that eliminates the need to purchase, maintain, or replace any hardware. Or the money and time it would take to hire qualified personnel to handle all of the necessary maintenance tasks.

Lambda’s low cost is due in large part to the fact that it makes use of serverless architecture to cut down on unnecessary cloud spending.

Is AWS Lambda A Serverless Computing Platform?

No. For AWS clients, Lambda is a critical part of serverless technology. Here’s how it’s accomplished:

To implement the serverless architecture, you’ll require a complex stack of components. The LAMP stack is a popular architecture since it calls for the following things:

Linux OS

  • HTTP server Apache
  • Management of relational databases with MySQL
  • PHP

The following is a more detailed stack for a web application:

  • Service for storing and retrieving data from a database
  • Service that acts as an HTTP gateway
  • Service for computing

Because it’s built on AWS, Lambda is available to anyone. Although serverless computing is a cost-effective technique for running your operations in the cloud, this is not the case. The serverless architecture has two key advantages:

  • Payment is based on the number of requests Lambda has served, as well as the amount of time it takes AWS to serve those requests. You don’t have to pay anything upfront, unlike most other architectures that charge for running in the background without doing anything for the user.
  • Autoscaling – The service scales up and down automatically. In times of increased demand, it raises computing resources like CPU, RAM, and memory. However, when there is little activity on the servers, some of those services are turned down. When your machine is idle, it can automatically scale from 0 to almost infinite, and then return to 0.

AWS Lambda: How It Works?

Lambda, AWS’s serverless computing platform of choice, gives developers a powerful tool for building and running cloud-based applications of any complexity.

It also interfaces with other AWS web services smoothly so you have all the tools you need to build large-scale cloud apps while also keeping them secure and adaptable at the same time.

Other AWS services that you may require are the following:

  • management of databases
  • Creating an app
  • Make a copy of everything and then restore it
  • Hosting a website.
  • E-commerce
  • Big data analytics
  • Chatbots
  • Broadcasting

There are currently over 200 AWS services available, and more will be added in the near future.

Unlike other services on AWS, Lambda runs your code automatically in response to a variety of events coming from both inside and outside the AWS ecosystem. The reason this matter is because it’s how Lambda functions are called, and those functions perform exactly what you want them to do, regardless of how big they are.

AWS Languages and Runtime Support

  • Python
  • js
  • Ruby
  • Java
  • Go
  • C# – .NET Core
  • PowerShell

As well as creating functions using the AWS UI, Lambda lets you create them locally and then publish them to AWS. To create Lambda Functions, AWS provides a default blueprint template.

Benefits of AWS Lambda

Pay per use

AWS Lambda costs you based on how much you use it. It relies on the computational power of your function and the amount of network traffic it generates.


As you asked, AWS Lambda generates an instance of your function. It’s also quite scalable. As a result, you can alter it whenever you wish.

Serverless Technology

You don’t have to worry about the server once you’ve launched your function on AWS Lambda. AWS manages everything for you.

AWS Product Integration

AWS Lambda offers interaction with other AWS services like S3, API Gateway, DynamoDB, and others, which you may use with your lambda function.

CloudWatch for monitoring

Logs may be readily added to your AWS Lambda function and filtered on Cloud Watch. On cloud watch, you may also track performance in real-time.

Rapid Growth

You only need to develop your logic and deploy it to run and execute because it is serverless. In some languages, you may even create/edit your function right in your browser and deploy it fast in the event of an error.


Because AWS Lambda is event-driven, your code will only run when it is needed. When someone uploads a file to an S3 bucket and that event is triggered, for example, or when something is processed and you want to send an alert notification or email.

AWS Lambda Limitations

Package Dimensions

The compressed bundle is limited to 50MB, and the uncompressed package is limited to 250MB.


Any function can have a maximum timeout of 900 seconds or 15 minutes. As a result, it would be ineffective in long processes.

Execution limit

At the account level, the concurrent execution limit is 1000.

Start with a cold start

The first call to AWS Lambda takes some time to process.


It lets you choose from 128MB to 3008MB of RAM for your purpose, with 64MB increments.


It is cost-effective for simple activities performed infrequently. However, if you want to use it for a high-volume application, it may cost more than AWS EC2.


Every technology, as we all know, has its advantages and disadvantages. The usefulness of an application to the customer determines its importance and worth. It is beneficial and cost-effective for small applications, but it may be prohibitively expensive for high-volume applications due to its serverless nature. AWS Lambda allows for quicker development and deployment.

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