AWS Certified Developer – Associate — Question 148

A company is using an Amazon API Gateway REST API endpoint as a webhook to publish events from an on-premises source control management (SCM) system to Amazon EventBridge (Amazon CloudWatch Events). The company has configured an EventBridge (CloudWatch Events) rule to listen for the events and to control application deployment in a central AWS account. The company needs to receive the same events across multiple receiver AWS accounts.

How can a developer meet these requirements without changing the configuration of the SCM system?

Answer options

• A. Deploy the API Gateway REST API to all the required AWS accounts. Use the same custom domain name for all the gateway endpoints so that a single SCM webhook can be used for all events from all accounts.
• B. Deploy the API Gateway REST API to all the receiver AWS accounts. Create as many SCM webhooks as the number of AWS accounts.
• C. Grant permission to the central AWS account for EventBridge (CloudWatch Events)to access the receiver AWS accounts. Add an EventBridge (CloudWatch Events) event bus on the receiver AWS accounts as the targets to the existing EventBridge (CloudWatch Events) rule.
• D. Convert the API Gateway type from REST API to HTTP API.

Correct answer: C

Explanation

The correct answer is C because granting permission allows the central AWS account to route events to the receiver accounts without modifying the SCM configuration. Option A is incorrect as deploying separate gateways would complicate the setup. Option B is not viable because it requires multiple webhooks, which contradicts the requirement of using a single SCM webhook. Option D does not address the need for multi-account event reception.