Question

What is AWS Lambda, and how can I deploy a function using the AWS CLI?

Answer 1

AWS Lambda allows you to run code without provisioning or managing servers. Here's an example Python Lambda function:

import json

def lambda_handler(event, context):
    return {
        'statusCode': 200,
        'body': json.dumps('Hello from Lambda!')
    }
 

To deploy this function using the AWS CLI:

aws lambda create-function \
    --function-name my-function \
    --runtime python3.8 \
    --role arn:aws:iam::123456789012:role/service-role/MyLambdaRole \
    --handler lambda_function.lambda_handler \
    --code S3Bucket=my-bucket-name,S3Key=my-function-code.zip