AZ-204 Practice Question: Azure Notification Hubs for cross-platform mobile…
The mobile app team needs to send push notifications to 10 million devices running both iOS and Android. On iOS, notifications go through Apple Push Notification service (APNs); on Android, through Firebase Cloud Messaging (FCM). The team wants a single Azure service that abstracts platform differences and scales without managing separate APNs and FCM integrations per platform. Which service should they use?
⚠ Common exam trap
Test-takers frequently confuse Azure Service Bus or Event Grid as viable push notification services, but neither provides direct, platform-abstracted push notification delivery to mobile devices like Notification Hubs does.
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 Notification Hubs with APNs and FCM credentials configured in the hub namespace
Azure Notification Hubs is the correct choice because it is a fully managed push notification service designed to abstract platform-specific notification systems like APNs (iOS) and FCM (Android). By configuring the APNs and FCM credentials in the hub namespace, the team can send a single notification that is automatically routed to the correct platform service, scaling to millions of devices without managing separate integrations.
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 Notification Hubs with APNs and FCM credentials configured in the hub namespace
Why this is correct
Notification Hubs is the Azure service designed for exactly this use case. Configure your APNs certificate and FCM server key once. The backend then calls Notification Hubs with a unified API, specifying templates or platform-specific payloads. The hub routes and delivers to the appropriate PNS for each device's platform.
- ✗
Azure Service Bus with topics — one subscription per platform, each subscription delivering to APNs or FCM
Why it's wrong here
Service Bus is a messaging backbone for application-to-application communication. It does not integrate with APNs or FCM and provides no push notification delivery infrastructure. Building this integration manually would require significant custom code and infrastructure.
- ✗
Azure Event Grid with a custom endpoint handler per platform that calls APNs or FCM directly
Why it's wrong here
This approach requires building, hosting, and maintaining separate custom handlers for each platform — exactly the complexity Notification Hubs eliminates. Event Grid is an event routing service, not a push notification platform.
- ✗
Azure Communication Services email with HTML-formatted alerts sent to device email addresses
Why it's wrong here
Email is not push notification. Mobile push notifications appear on the device lock screen and in the notification tray via the platform's native push system. Email cannot replace APNs/FCM delivery.
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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.