MS-900 Describe Microsoft 365 apps and services Practice Question
An organization needs to securely store and manage user identities for Microsoft 365. Which Microsoft service should they use?
⚠ Common exam trap
Many exam-takers confuse Microsoft Purview (data compliance) or Defender for Cloud Apps (security monitoring) with identity management, but only Microsoft Entra ID provides the core directory service for storing and authenticating user identities in Microsoft 365.
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
✓
Microsoft Entra ID
Microsoft Entra ID (formerly Azure AD) is the correct choice because it is Microsoft's cloud-based identity and access management service, specifically designed to store and manage user identities for Microsoft 365. It provides authentication, single sign-on (SSO), and conditional access policies, ensuring secure access to Microsoft 365 resources. Other options focus on data protection, security monitoring, or device management, not identity storage.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Microsoft Entra ID
Why this is correct
Microsoft Entra ID is the identity and access management service for Microsoft 365.
- ✗
Microsoft Purview
Why it's wrong here
Microsoft Purview is for data governance.
- ✗
Microsoft Defender for Cloud Apps
Why it's wrong here
Microsoft Defender for Cloud Apps is a cloud access security broker.
- ✗
Microsoft Intune
Why it's wrong here
Microsoft Intune is for device management.
Go deeper
Related to this question
Learn chapter
Cloud Service Types for MS-900
Key term
Conditional access
Conditional access is a security framework that evaluates signals like user location, device health, and risk level to grant or block access to resources in real time.
Key term
Microsoft Entra ID
Microsoft Entra ID is a cloud-based identity and access management service that lets employees sign in and access resources both inside and outside of your organization.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MS-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 MS-900 exam.