SAP-C02 Design for New Solutions Practice Question
A company is designing an event-driven architecture using Amazon EventBridge. They have multiple AWS accounts that need to receive events from a central account. What is the MOST scalable and secure way to route events to these accounts?
⚠ Common exam trap
A common mix-up: candidates default to SNS or SQS for cross-account messaging, but EventBridge's native cross-account event bus feature is specifically designed for this use case and is more scalable and secure because it uses resource-based policies and avoids intermediate services.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Amazon EventBridge cross-account event buses in each target account
Amazon EventBridge cross-account event buses allow a central account to route events directly to event buses in target accounts using resource-based policies. This approach is serverless, fully managed, and scales horizontally without any intermediate components, making it the most scalable and secure solution. It avoids the complexity and potential bottlenecks of Lambda invocations, Kinesis stream management, or SNS-to-SQS fan-out across accounts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use Amazon EventBridge cross-account event buses in each target account
Why this is correct
EventBridge natively supports cross-account event routing.
- ✗
Publish events to an AWS Lambda function in each target account
Why it's wrong here
Not scalable and adds complexity.
- ✗
Use Amazon Kinesis Data Streams with cross-account access
Why it's wrong here
Kinesis is for streaming data, not event routing.
- ✗
Create an Amazon SNS topic in the central account and subscribe SQS queues in each target account
Why it's wrong here
SNS cross-account is possible but less scalable than EventBridge.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAP-C02 exam.