Hi@akhtar,
To create a function, you need a deployment package and an execution role. The deployment package contains the function code. The execution role grants the function permission to use AWS services. The following create-function example creates a Lambda function named my-function.
$ aws lambda create-function \
    --function-name my-function \
    --runtime nodejs10.x \
    --zip-file fileb://my-function.zip \
    --handler my-function.handler \
    --role arn:aws:iam::123456789012:role/service-role/MyTestFunction-role-tges6bf4