AWS Basics

Question 1

What is Amazon EventBridge?

Answer 1

Used to ingest and filter events and then forward them only to the right consumers (event bus)

Question 2

What are some features of Lambda?

Answer 2

1. It is stateless
2. It initiates functions in response to events (even-driven architecture)
3. It provides built-in monitoring and logging
4. It scales automatically

Question 3

When should you invoke a Lambda function asynchronously?

Answer 3

When the client doesn’t need an immediate response. Can be invoked async with SNS, S3 and EventBridge. Has built-in retries (retries twice)

Other invocations options are synchronous and polling.
Polling is done with Kinesis, SQS, and DynamoDB streams (but perform synchronous invocations)
Synchronous invocation is done with API Gateway, Cognito, CloudFormation, Alexa, Lex, and CloudFront