AWS Application Integration Services Flashcards

A company wants to run a Lambda function every weekday at 8:00 AM without managing servers or cron hosts. Which approach is most appropriate?

Answer: An Amazon EventBridge schedule using a cron expression

EventBridge Scheduler or scheduled rules support cron and rate expressions to invoke targets like Lambda.

Developers want to automatically discover the structure of events on an EventBridge bus and generate code bindings for them. Which feature should they use?

Answer: EventBridge Schema Registry with schema discovery

The Schema Registry can discover event schemas and generate code bindings for languages like Java, Python, and TypeScript.

After fixing a bug in a consumer, a team needs to reprocess the EventBridge events received over the past 3 days. What feature enables this?

Answer: Event archive and replay

EventBridge archives store events, and replay sends archived events back to the bus for reprocessing.

A company wants to react to events from a SaaS provider such as Zendesk or Datadog without polling its API. Which EventBridge capability supports this?

Answer: Partner event sources delivered to a partner event bus

Supported SaaS partners publish events to a partner event source, which you associate with a partner event bus.

An architect needs a point-to-point integration that reads from a DynamoDB stream, filters records, enriches them with a Lambda function, and sends them to Step Functions, with minimal custom code. Which service fits best?

Answer: Amazon EventBridge Pipes

EventBridge Pipes connects a source to a target with optional filtering and enrichment steps.

Account A must send events to an event bus in Account B. What must be configured in Account B?

Answer: A resource-based policy on the event bus allowing Account A to put events

Cross-account delivery requires the target event bus's resource policy to allow events:PutEvents from the source account.

A target expects only a few fields from an EventBridge event in a custom format. How can you reshape the event before delivery without writing code?

Answer: Use an input transformer on the rule target

Input transformers extract values from the event with input paths and inject them into a custom template for the target.