AZ-204 Practice Question: Connect to and consume Azure services and third-party services
A system receives high-volume event notifications from Azure resources and routes them to serverless handlers. Events are lightweight and should use native event routing. Which service should be used?
⚠ Common exam trap
Many candidates confuse Azure Event Grid (push-based, lightweight event routing) with Azure Service Bus (pull-based, message queuing), leading candidates to choose Service Bus for event scenarios when Event Grid is the native, serverless-optimized choice.
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
✓
Azure Event Grid
Azure Event Grid is the correct choice because it is a fully managed event routing service designed for high-volume, lightweight event notifications using native event routing (HTTP-based push model). It supports serverless handlers like Azure Functions and automatically delivers events to subscribers with built-in retry and dead-lettering, making it ideal for reacting to Azure resource state changes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Azure DNS
Why it's wrong here
Azure DNS manages DNS zones and does not route application events.
- ✓
Azure Event Grid
Why this is correct
Event Grid is designed for reactive event routing from Azure services and custom publishers.
- ✗
Azure Files
Why it's wrong here
Azure Files provides SMB/NFS shares, not event routing.
- ✗
Azure Service Bus queue
Why it's wrong here
Service Bus is better for enterprise messaging with commands and durable queues.
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 |
Go deeper
Related to this question
Learn chapter
Azure Functions Development
Key term
Durable Functions
Durable Functions is an extension of Azure Functions that lets you write stateful workflows in code, managing complex sequences of tasks, retries, and delays automatically.
Key term
Azure Functions Bindings
Azure Functions Bindings are declarative connections that link your serverless function code to Azure services or external resources, handling input and output data automatically without writing extra networking or authentication code.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-204 practice question is part of Courseiva's free Microsoft 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 AZ-204 exam.