AZ-900 Describe Azure architecture and services Practice Question
Which Azure service enables you to stream live events and on-demand video content to global audiences?
⚠ Common exam trap
Many exam-takers confuse Azure CDN (a delivery accelerator) with a full streaming service, or they mistake Azure Video Analyzer for Media (an AI analysis tool) for a streaming platform, because both have 'video' or 'media' in their names but serve fundamentally different purposes.
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 Media Services
Azure Media Services is the correct choice because it is a PaaS offering specifically designed for encoding, packaging, and streaming both live events and on-demand video content at scale. It supports industry-standard protocols like HLS and MPEG-DASH, and integrates with Azure CDN for global delivery, making it the dedicated service for end-to-end video workflows.
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 CDN
Why it's wrong here
Azure CDN is a global content delivery network that accelerates the delivery of existing content by caching it at edge servers close to users. It does not provide video encoding, transcoding, live streaming ingestion, or packaging capabilities—it only serves content that has already been prepared by a streaming platform. While Azure Media Services can integrate with CDN for efficient distribution, using CDN alone would fail to address the core need for video encoding and streaming management.
- ✓
Azure Media Services
Why this is correct
Azure Media Services is the correct service because it provides a complete media platform for end-to-end video workflows, including ingesting, encoding, transcoding, packaging, and both live and on-demand streaming. It supports broadcast-quality features like adaptive bitrate streaming, DRM encryption, and integration with CDNs for global delivery. This service is specifically designed to handle the encoding and streaming platform requirements described in the scenario, unlike analysis or communication-focused services.
- ✗
Azure Communication Services
Why it's wrong here
Azure Communication Services provides APIs for real-time communication scenarios, including audio/video calling, chat, and SMS, typically for interactive experiences between users. It is not built for one-to-many broadcast-scale video streaming, nor does it handle media encoding and packaging for on-demand or live broadcasts. While it supports video, it lacks the dedicated streaming pipeline, DRM support, and CDN integration that Azure Media Services offers, making it the wrong service for this workload.
- ✗
Azure Video Analyzer for Media
Why it's wrong here
Azure Video Analyzer for Media is an AI-powered service designed to extract insights from videos, such as facial recognition, speech-to-text, and sentiment detection. It does not perform video encoding, transcoding, or streaming distribution—those functions belong to Azure Media Services. Since the question asks for a service that handles the encoding and streaming pipeline, Video Analyzer is incorrect because its purpose is analysis rather than delivery.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-900 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-900 exam.