The answer is to configure the App Service authentication / authorization feature (often called Easy Auth) to use Microsoft Entra ID. This is correct because Easy Auth acts as a built-in reverse proxy that handles token validation and session management, allowing your application to integrate seamlessly with the Microsoft Authentication Library (MSAL) without requiring custom authentication code. On the Microsoft Azure Solutions Architect Expert AZ-305 exam, this scenario tests your understanding of how to simplify identity management for PaaS services—a common trap is confusing Easy Auth with Azure AD B2C (which is for external customer identities) or Azure API Management (which focuses on API security). Remember that Easy Auth offloads the OAuth 2.0 flow to the platform, so your app only needs to call MSAL for token acquisition. Memory tip: think “Easy Auth = Entra ID handshake, no code to bake.”
AZ-305 Design infrastructure solutions Practice Question
This AZ-305 practice question tests your understanding of design infrastructure solutions. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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 is deploying a web application on Azure App Service. The application must authenticate users with their Microsoft Entra ID credentials. The development team wants to use the Microsoft Authentication Library (MSAL) for authentication. Which App Service authentication feature should they use to simplify integration?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure the App Service authentication / authorization feature to use Microsoft Entra ID
Option A is correct because the App Service authentication / authorization feature (Easy Auth) can be configured to use Microsoft Entra ID as the identity provider and integrate with MSAL. Option B is incorrect because App Insights is for monitoring. Option C is incorrect because Azure AD B2C is for external users. Option D is incorrect because Azure API Management is for managing APIs.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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 Application Insights to capture authentication logs
Why it's wrong here
Application Insights is for monitoring, not authentication.
Configure the App Service authentication / authorization feature to use Microsoft Entra ID
Why this is correct
Easy Auth simplifies integration with Microsoft Entra ID.
Related concept
Authentication checks who the user is.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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-305 question in full detail.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related AZ-305 questions on access control and AAA configuration.
Design infrastructure solutions — This question tests Design infrastructure solutions — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Configure the App Service authentication / authorization feature to use Microsoft Entra ID — Option A is correct because the App Service authentication / authorization feature (Easy Auth) can be configured to use Microsoft Entra ID as the identity provider and integrate with MSAL. Option B is incorrect because App Insights is for monitoring. Option C is incorrect because Azure AD B2C is for external users. Option D is incorrect because Azure API Management is for managing APIs.
What should I do if I get this AZ-305 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related AZ-305 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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