Top Azure Active Directory Interview Questions for 2025

Azure Active Directory, now branded Microsoft Entra ID, remains central to identity and access management interviews. Here are the questions candidates are most likely to face.

What is Azure Active Directory?

Azure Active Directory is Microsoft's cloud-based identity and access management service, used for authenticating and authorizing users to access applications, resources, and services.

What is the difference between Azure AD and Active Directory Domain Services?

Active Directory Domain Services is an on-premises directory service using LDAP and Kerberos for local network authentication, while Azure AD is a cloud identity platform designed for internet-based, SaaS, and mobile authentication.

What is a tenant in Azure AD?

A tenant is a dedicated, isolated instance of Azure AD that an organization receives when it signs up for a Microsoft cloud service, representing that organization's identities and configuration.

What is single sign-on (SSO)?

SSO lets a user authenticate once and then access multiple applications without re-entering credentials, improving both security and user experience.

What is multi-factor authentication (MFA)?

MFA requires users to verify their identity using two or more independent factors, such as a password plus a mobile app approval, reducing the risk of compromised credentials.

What is Conditional Access in Azure AD?

Conditional Access is a policy engine that grants or blocks access to resources based on signals like user location, device compliance, and risk level, enforcing controls such as requiring MFA under specific conditions.

What is Azure AD Connect?

Azure AD Connect is a tool that synchronizes on-premises Active Directory identities with Azure AD, enabling hybrid identity scenarios where users have a consistent identity across both environments.

What is the difference between synchronization and federation in hybrid identity?

Synchronization copies identity data to Azure AD and can validate passwords there, while federation delegates authentication back to an on-premises identity provider like AD FS.

What are Azure AD roles, and how do they differ from Azure RBAC roles?

Azure AD roles control administrative access to Azure AD itself, such as managing users or apps, while Azure RBAC roles control access to Azure resources like VMs or storage accounts.

What is an App Registration in Azure AD?

An App Registration defines an application's identity within Azure AD, including its permissions, redirect URIs, and credentials, allowing it to authenticate users or call APIs securely.

What is the difference between a security group and a Microsoft 365 group?

Security groups are used to manage access to resources and apply permissions, while Microsoft 365 groups additionally provide collaboration features like a shared mailbox, calendar, and files.

What is Privileged Identity Management (PIM)?

PIM provides just-in-time, time-bound activation of privileged roles, along with approval workflows and access reviews, to reduce standing exposure to high-privilege accounts.

What is Azure AD B2B, and how does it differ from B2C?

Azure AD B2B allows external partners to access your organization's resources using their own credentials, while Azure AD B2C is used to manage identities for external customer-facing applications.