The correct choice is App Service Authentication, commonly known as EasyAuth, because it enables you to implement authentication with Microsoft Entra ID directly within the Azure App Service platform without writing any authentication code. EasyAuth works by intercepting incoming HTTP requests at the App Service layer, automatically validating tokens and cookies against your Entra ID tenant, and injecting identity claims into the request headers for your application to consume. On the Microsoft Azure Solutions Architect Expert AZ-305 exam, this question tests your understanding of when to choose a no-code authentication solution versus client-side libraries like MSAL, which require code changes. A common trap is assuming that Azure API Management or Azure Front Door can handle user authentication natively, but they lack the built-in identity provider integration that EasyAuth provides. Remember the memory tip: “EasyAuth = Easy App Service Authentication” — if the requirement is no code and native Entra ID integration, think EasyAuth first.
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.
You are designing a web application that will be hosted on Azure App Service. The application must authenticate users from your company's Microsoft Entra ID tenant. You need to implement authentication without writing any authentication code. What should you use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
App Service Authentication (EasyAuth)
Option B is correct because EasyAuth (App Service Authentication) provides built-in authentication with Entra ID without requiring code changes. Option A is wrong because Microsoft Authentication Library (MSAL) requires code changes. Option C is wrong because Azure API Management can add authentication but requires configuration and may still need code. Option D is wrong because Azure Front Door does not provide authentication.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 API Management with OAuth 2.0 policy
Why it's wrong here
API Management can authenticate, but it requires configuration and the app may still need to handle tokens.
✗
Microsoft Authentication Library (MSAL) integrated into the application code
Why it's wrong here
MSAL requires code changes, which does not meet the 'without writing any authentication code' requirement.
✓
App Service Authentication (EasyAuth)
Why this is correct
EasyAuth enables authentication at the App Service platform level with Entra ID without requiring application code changes.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Front Door with authentication rules
Why it's wrong here
Front Door does not provide authentication; it's a global load balancer and WAF.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Identify which AZ-305 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Design infrastructure solutions — This question tests Design infrastructure solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: App Service Authentication (EasyAuth) — Option B is correct because EasyAuth (App Service Authentication) provides built-in authentication with Entra ID without requiring code changes. Option A is wrong because Microsoft Authentication Library (MSAL) requires code changes. Option C is wrong because Azure API Management can add authentication but requires configuration and may still need code. Option D is wrong because Azure Front Door does not provide authentication.
What should I do if I get this AZ-305 question wrong?
Identify which AZ-305 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This AZ-305 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-305 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.