What is AWS Lambda?

According to the official AWS source, “AWS Lambda is a computing service that enables code execution without the need for server provisioning or management. It scales automatically, from a few requests per day to thousands per second, and only runs your code when necessary.”

How does AWS Lambda function?

Developers can begin utilizing AWS Lambda services by uploading the code or writing it directly in the AWS Lambda code editor and mentioning the conditions that trigger the code. AWS lambda function is the code name that runs within the lambda runtime environment. With this, developers don’t have to worry about managing the server or obtaining the appropriate application or resource—any event can trigger your function. This implies that companies can save money on server costs because they are not charged while your code is not in use.

When an event occurs, AWS Lambda initiates the related code by selecting the finest resources from the infrastructure ecosystem to carry out the event. thus making it possible for companies to manage their IT infrastructure intelligently. The control plane component of the AWS Lambda run-time environment is made up of APIs that make it easier to use AWS resources for application execution. The data pane, which offers APIs to run the functions, is another essential component of the run-time environment. The data pane either provides a distinct execution environment or utilizes the one that is assigned whenever a function is invoked to operate. No other function ever shares this execution environment.

Advantages of AWS Lambda

The applications can be used on a mobile device or the web.
AWS Lambda uses the Amazon Identity and Access Management (IAM) module to restrict access to the application or function to just authorized users or groups.
By processing the events that trigger a certain code, lambda expedites the execution process and expands your application or code.
The ability to operate an application without worrying about infrastructure frees developers to concentrate on business logic.
Robust APIs facilitate seamless integration between user apps and cutting-edge AWS services, like AI and machine learning, allowing you to create intelligent business applications or infuse intelligence into your existing applications.

Process for creating AWS Lambda functionAWS Lambda function

Step 1: Login into your AWS account and click on “Sign in to the Console.”

Step 2: Put in your password and login ID.

Step 3: Go to “AWS Services” and select Lambda.

Step 4: Click on “Create Function”

Step 5: Select options and click on the “Create Function” button

Then enter the following details:

Function Type: Author from scratch
Name: lambdaBlog
Runtime: Node.js 10.x
Role: Choose an existing role / Create any custom rule
Existing Role: lambda_basic_execution

Step 6: Choose a way to upload/create code in the AWS lambda function.

Step 7: Now you can write your code in the editor provided, it runs on Nodejs which we selected earlier.

Step 8: For AWS to know which function to execute, the handler name and function name must match.

Step 9: Additional choices that we may add include memory, environment variables, tags to organize our other routines, and execution timeouts.

Step 10: Now click “Save”

Step 11: Now, copy the ARN number in the upper right corner.

Conclusion

Hence here in this blog we have covered the “process for creating AWS lambda function”, “Advantages of AWS lambda”, “What is AWS lambda”, and “How does AWS lambda function”. Hope after reading this blog you have cleared all your doubts related to AWS lambda and AWS lambda function setup.