Select blueprint” and then select “Blank Function”

“Configure triggers” (in our case we don't have any triggers or events)

“Configure function”:

Name: Provide MethodHandlerLambda,

Description: Anything that describes our lambda function

Runtime: Select java8

Code Entry Type and Function Package: Select “Upload a .ZIP and Jar file” and click on “Upload” button. Select the file which contains lambda code.

Under Lambda function handler and role:

Handler name: Provide lambda function handler name com.baeldung.MethodHandlerLambda::handleRequest

Role name: If any other AWS resources are used in lambda function, then provide access by creating/using existing role and also define the policy template.

Under Advanced settings:

Memory: Provide memory that will be used by our lambda function.

Timeout: Select a time for execution of lambda function for each request.

Once you are done with all inputs, click “Next” which will show you to review the configuration.

Once a review is completed, click on “Create Function”.

https://docs.aws.amazon.com/lambda/latest/dg/getting-started.html