Lambda integration in AWS - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is AWS Lambda integration?

AWS Lambda integration means connecting Lambda functions with other AWS services or applications so they can work together automatically.

beginner

How does AWS Lambda get triggered in an integration?

AWS Lambda can be triggered by events like HTTP requests, file uploads, database changes, or messages from other AWS services.

beginner

What is an example of Lambda integration with API Gateway?

API Gateway can receive HTTP requests and then call a Lambda function to process the request and return a response.

beginner

Why use Lambda integration instead of running a server?

Lambda integration lets you run code only when needed without managing servers, saving time and money.

intermediate

What permissions are needed for Lambda integration?

Lambda needs permission to be triggered by other services and to access resources it uses, controlled by AWS IAM roles.

Which AWS service can trigger a Lambda function with an HTTP request?

A API Gateway

B S3 Bucket

C CloudWatch Logs

D DynamoDB

API Gateway is designed to receive HTTP requests and can trigger Lambda functions.

What is a key benefit of Lambda integration?

A Always running servers

B Pay only when code runs

C Manual scaling

D Requires complex setup

Lambda charges only for the time your code runs, saving costs compared to always running servers.

Which AWS component controls Lambda permissions for integration?

A IAM Roles

B CloudTrail

C SNS Topics

D Route 53

IAM Roles define what Lambda can access and who can trigger it.

Which event can NOT directly trigger a Lambda function?

A DynamoDB table update

B API Gateway HTTP request

C S3 file upload

D Manual server reboot

Manual server reboot is not an AWS event and cannot trigger Lambda directly.

What happens when API Gateway integrates with Lambda?

A They run independently

B Lambda calls API Gateway

C API Gateway triggers Lambda on requests

D API Gateway stores Lambda code

API Gateway triggers Lambda functions when it receives requests.

Explain how AWS Lambda integrates with other AWS services to automate tasks.

Think about what starts Lambda and how it can access resources.

Describe the benefits of using Lambda integration compared to traditional server setups.

Focus on what changes when you don't have to run servers all the time.