The answer is Azure Content Delivery Network (CDN). This service caches static content and frequently accessed data at edge nodes located in global points of presence, bringing content physically closer to users and drastically reducing latency for geographically distributed audiences. On the Microsoft Azure Fundamentals AZ-900 exam, this question tests your understanding of how Azure CDN offloads origin traffic from services like App Service while improving end-user performance. A common trap is confusing CDN with Azure Traffic Manager, which handles DNS-based traffic routing rather than content caching. Remember the core distinction: CDN stores copies of files at edge locations for faster delivery, while Traffic Manager only directs users to the nearest healthy endpoint. For a quick memory tip, think “CDN = Cache at the Doorstep Nearest” to recall that static content is served from the edge node closest to the user.
AZ-900 Describe Azure architecture and services Practice Question
This AZ-900 practice question tests your understanding of describe azure architecture and services. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. A key principle to apply: azure CDN caches static and dynamic content at edge locations.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company runs a web application on Azure App Service. They want to improve performance by caching static content and frequently accessed data closer to users in different geographic locations. Which Azure service should they use?
Why wrong: Traffic Manager routes traffic based on DNS and health checks; it does not cache content.
B
Azure Application Gateway
Why wrong: Application Gateway is a regional layer 7 load balancer with SSL termination and URL routing, but it does not cache globally.
C
Azure Content Delivery Network
CDN caches content at edge servers distributed globally, improving load times for users.
D
Azure Front Door
Why wrong: Front Door provides global load balancing and acceleration, but it is not primarily for caching; it can integrate with CDN, but the simplest dedicated service is CDN.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Content Delivery Network
Azure Content Delivery Network (CDN) caches static content and frequently accessed data at edge nodes located closer to users, reducing latency and improving performance for geographically distributed audiences. This directly addresses the requirement to serve cached content from locations near the end users, offloading origin traffic from the App Service.
Key principle: Azure CDN caches static and dynamic content at edge locations.
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 Traffic Manager
Why it's wrong here
Traffic Manager routes traffic based on DNS and health checks; it does not cache content.
✗
Azure Application Gateway
Why it's wrong here
Application Gateway is a regional layer 7 load balancer with SSL termination and URL routing, but it does not cache globally.
✓
Azure Content Delivery Network
Why this is correct
CDN caches content at edge servers distributed globally, improving load times for users.
Related concept
Azure CDN caches static and dynamic content at edge locations.
✗
Azure Front Door
Why it's wrong here
Front Door provides global load balancing and acceleration, but it is not primarily for caching; it can integrate with CDN, but the simplest dedicated service is CDN.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure Traffic Manager's 'performance' routing (which directs users to the nearest regional endpoint) with actual content caching, but Traffic Manager does not cache data—it only routes requests to the origin server closest to the user.
Detailed technical explanation
How to think about this question
Azure CDN uses a global network of edge servers (Points of Presence, PoPs) that cache responses based on cache-control headers and TTL values. When a user requests cached content, the edge node serves it directly, bypassing the origin server entirely, which reduces latency and origin load. In a real-world scenario, a global e-commerce site can cache product images and static assets on CDN edges, ensuring fast page loads for users in Asia, Europe, and the Americas without overwhelming the App Service backend.
KKey Concepts to Remember
Azure CDN caches static and dynamic content at edge locations.
CDN reduces latency by serving content from geographically closer servers.
It improves web application performance and user experience globally.
CDN offloads traffic from origin servers, reducing their load.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Azure CDN caches static and dynamic content at edge locations.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-900 question in full detail.
Review azure CDN caches static and dynamic content at edge locations., then practise related AZ-900 questions on the same topic to reinforce the concept.
Describe Azure architecture and services — This question tests Describe Azure architecture and services — Azure CDN caches static and dynamic content at edge locations..
What is the correct answer to this question?
The correct answer is: Azure Content Delivery Network — Azure Content Delivery Network (CDN) caches static content and frequently accessed data at edge nodes located closer to users, reducing latency and improving performance for geographically distributed audiences. This directly addresses the requirement to serve cached content from locations near the end users, offloading origin traffic from the App Service.
What should I do if I get this AZ-900 question wrong?
Review azure CDN caches static and dynamic content at edge locations., then practise related AZ-900 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Azure CDN caches static and dynamic content at edge locations.
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