Microsoft Entra ID Interview Questions and Answers – Part 1: Fundamentals and IAM

SECTION A — Microsoft Entra ID basics

Q1. What is Azure Active Directory (Azure AD)?

Azure Active Directory (Azure AD) was Microsoft’s cloud-based identity and access management (IAM) service. It allowed organizations to manage identities and control access to applications, services, and resources.

Azure Active Directory was renamed Microsoft Entra ID in 2023. The name changed, but the underlying service, capabilities, existing deployments, and integrations continued without interruption.

Today, the correct product name is Microsoft Entra ID.

Real-world example

Imagine a company called ABC Corporation with 2,000 employees.

The company uses Microsoft 365 for:

• Outlook
• Teams
• SharePoint
• OneDrive

Instead of maintaining a completely separate identity for every Microsoft cloud service, the organization can use Microsoft Entra ID as its central cloud identity platform.

For example:

John works in the IT department. His company account is john@abc.com.

When John signs in to Microsoft 365, Microsoft Entra ID can authenticate his identity and apply the organization’s access policies before allowing him to access the requested service.

If the organization requires MFA, John may also need to approve the sign-in using Microsoft Authenticator or another supported authentication method.

This is one of the reasons Microsoft Entra ID is fundamental to Microsoft 365 administration.

🎯 Interview Tip

If the interviewer asks:

“What is Azure AD?”

A strong 20–30 second response would be:

“Azure Active Directory, now called Microsoft Entra ID, is Microsoft’s cloud-based identity and access management service. It is used to manage identities and control access to applications and resources. It provides capabilities such as authentication, authorization, MFA, SSO and Conditional Access, and it is widely used with Microsoft 365, Azure and other cloud applications.”

Q2. What is Microsoft Entra ID?

Microsoft Entra ID is Microsoft’s cloud-based identity and access management (IAM) service. It helps organizations manage identities and securely control access to applications, data, services, and other resources.

It provides capabilities such as authentication, authorization, Single Sign-On (SSO), Multi-Factor Authentication (MFA), Conditional Access, application identity, device identity, and identity protection.

Microsoft Entra ID was previously known as Azure Active Directory (Azure AD). Microsoft renamed Azure AD to Microsoft Entra ID beginning in 2023; existing deployments and integrations continued to work without requiring organizations to migrate to a different identity service.

Real-world example

Imagine ABC Corporation has 2,000 employees.

The company uses Microsoft 365, Azure and several third-party SaaS applications.

Instead of creating and independently managing identities in every application, ABC Corporation can use Microsoft Entra ID as its central identity platform.

For example:

John → signs in with his company account

Microsoft Entra ID can:

1. Verify John’s identity.
2. Determine which authentication requirements apply.
3. Require MFA if necessary.
4. Evaluate Conditional Access policies.
5. Provide the appropriate authentication information to the application.
6. Allow or deny access based on the organization’s policies.

This centralized approach makes identity management easier to administer and helps organizations apply consistent security controls.

Q3. What does Microsoft Entra ID actually do?

At a basic level, Microsoft Entra ID helps an organization answer two questions:

Who is trying to access the resource?

This is authentication — verifying a user’s or application’s identity.

and

Should this identity be allowed to access it?

This is authorization — determining whether that identity has permission to access a particular resource.

For example, when an employee signs in to Microsoft 365:

Employee
   │
   │ Sign-in request
   ▼
Microsoft Entra ID
   │
   ├── Authenticates the user
   │
   ├── Evaluates applicable policies
   │
   ├── May require MFA
   │
   └── Determines access
          │
          ▼
   Microsoft 365 / Application

Microsoft Entra ID acts as a central identity provider for many applications and services. It can provide users with a common sign-in experience, supports multiple authentication protocols, including SAML, OpenID Connect, and OAuth 2.0, provides policy enforcement, and protection for users, devices, applications, and resources.

Q4. Why is Microsoft Entra ID important?

Modern organizations often use hundreds of cloud applications and services.

Without a centralized identity platform, users and administrators could end up managing separate accounts and access permissions across many different applications.

Microsoft Entra ID provides a centralized identity layer.

For example, an organization might use:

• Microsoft 365
• Azure
• Salesforce
• ServiceNow
• Workday
• Internal web applications
• Other SaaS applications

Applications that integrate with Microsoft Entra ID can use it as an identity provider, allowing organizations to centrally manage access and authentication.

Q5. What types of identities and resources can Microsoft Entra ID manage?

Microsoft Entra ID provides a wide range of identity and access capabilities, that includes :

👤 Users Management

Employee, administrator, guest and other user identities.

👥 Groups Management

Groups can be used to organize users and help manage access.

📱 Devices

Microsoft Entra ID can maintain identities for organizational devices and support scenarios such as Microsoft Entra joined devices.

📦 Applications

Applications can be integrated with Microsoft Entra ID for authentication and access management.

🔐 Authentication

📱 Multi-Factor Authentication (MFA)

🔑 Single Sign-On (SSO)

🔗 Integration with Microsoft 365 and other cloud applications

🔎 Identity monitoring and protection

👨‍💼 Privileged access management

⚙️ Workload identities

Applications and services can also require identities to access resources.

Microsoft describes Entra ID as the foundational product in the broader Microsoft Entra family, providing authentication, policy enforcement and protection for users, devices, applications and resources.

It is therefore much more than simply a place where usernames and passwords are stored.

Q6. Microsoft Entra ID and Microsoft 365

One of the most important things to understand for an interview is the relationship between Microsoft 365 and Microsoft Entra ID.

Microsoft 365 uses Microsoft Entra ID for identity and access management.

For example, when a user signs in to services such as:

• Exchange Online
• Microsoft Teams
• SharePoint Online
• OneDrive
• Microsoft 365 admin services

Microsoft Entra ID plays a central role in authenticating the user’s identity and controlling access.

Microsoft states that Microsoft 365 subscribers are already using Microsoft Entra ID because each Microsoft 365 tenant is also a Microsoft Entra tenant.

Q7. Microsoft Entra ID and Azure

Microsoft Entra ID is also closely connected with Azure.

For example, an organization can use Microsoft Entra identities to access Azure resources and manage administrative permissions through Microsoft Entra roles and Azure RBAC.

This is why Azure administrators need to understand both:

Identity → Microsoft Entra ID

and

Azure resources → Azure subscriptions and resource management

These concepts are related, but they are not the same thing.

We will explore the difference between a Microsoft Entra tenant and an Azure subscription later in this section.

🎯 Interview Tip

If the interviewer asks:

“What is Microsoft Entra ID?”

A strong answer would be:

“Microsoft Entra ID is Microsoft’s cloud-based identity and access management service, formerly known as Azure Active Directory. It is used to manage identities and control access to applications and resources. It provides capabilities such as authentication, authorization, SSO, MFA, Conditional Access and identity protection, and is widely used with Microsoft 365, Azure and third-party applications.”

If the interviewer then asks:

“Is Microsoft Entra ID the same as Active Directory?”

Don’t simply answer “yes” or “no.”

Explain the difference between Microsoft Entra ID and Windows Server Active Directory, and mention that they can be integrated in a hybrid environment.

Microsoft Entra ID and Windows Server Active Directory Domain Services (AD DS) are different identity platforms, although organizations can integrate them to create hybrid identity environments.

Quick Revision

Microsoft Entra ID = Microsoft’s cloud-based identity and access management service.

Remember these four words:

Identity → Authentication → Access → Security

Q8. What is the difference between Azure AD and Microsoft Entra ID?

There is no separate difference between Azure Active Directory (Azure AD) and Microsoft Entra ID in terms of the underlying identity service.

Azure Active Directory (Azure AD) was the former name of Microsoft Entra ID.

Microsoft renamed Azure AD to Microsoft Entra ID in 2023 as part of the Microsoft Entra family of identity and network access products.

In simple terms:

Azure AD = Microsoft Entra ID

They can work together in a hybrid identity environment, but they are not the same product.

Q9. Why did Microsoft rename Azure AD to Microsoft Entra ID?

Microsoft renamed Azure Active Directory (Azure AD) to Microsoft Entra ID in 2023 as part of the broader Microsoft Entra product family.

One reason for the change was to better distinguish the cloud identity service from Windows Server Active Directory and to reflect Microsoft’s broader focus on multicloud and multiplatform identity and access.

The Azure AD name could also cause confusion with Windows Server Active Directory, even though they are different technologies.

The rename does not mean that organizations had to rebuild their existing environments. Microsoft states that existing deployments, configurations, integrations, APIs and sign-in URLs continued to work.

Microsoft therefore adopted Microsoft Entra ID as the current product name.

Q10. What was the main reason for the name change?

There were several reasons behind Microsoft’s decision.

1. To distinguish it from Windows Server Active Directory

The name “Active Directory” has traditionally been strongly associated with Windows Server Active Directory Domain Services (AD DS).

However, Microsoft Entra ID and Windows Server AD DS are different technologies.

For example:

Windows Server Active Directory

• Primarily used for traditional on-premises identity management
• Uses domain controllers
• Supports technologies such as Kerberos and LDAP
• Provides organizational structures such as Organizational Units (OUs)
• Commonly used with Group Policy

Microsoft Entra ID

• Cloud-based identity and access management
• Designed for cloud and modern application environments
• Provides capabilities such as Conditional Access and MFA
• Integrates with Microsoft 365, Azure and many SaaS applications
• Uses modern authentication and authorization technologies

The new name helps reduce the assumption that Microsoft Entra ID is simply a cloud-hosted version of Windows Server Active Directory.

2. Microsoft Entra is a broader identity and access family

Microsoft Entra is not limited to the traditional concept of a directory.

The Microsoft Entra product family covers a broader set of identity and access capabilities.

For example, the portfolio includes technologies and services related to:

• Workforce identity
• External identities
• Identity protection
• Privileged access
• Application identities
• Network access

Microsoft Entra ID is the core cloud identity and access management service within this ecosystem.

3. To reflect modern identity requirements

Modern organizations don’t only have employees accessing applications from corporate computers.

Users may work from:

• Office networks
• Home
• Mobile devices
• Public networks
• Multiple cloud platforms

Organizations also need to manage identities for:

• Applications
• Services
• Devices
• External users
• Workloads

Modern identity management therefore involves much more than simply maintaining usernames and passwords.

Microsoft Entra ID provides capabilities designed for these modern identity and access scenarios.

Also remember that Windows Server Active Directory and Azure AD or Microsoft Entra ID are different identity platforms, although they can be integrated in hybrid environments.

Q11. Did anything change for existing Azure AD customers? or Did the rename change existing Azure AD environments?

The name changed, but organizations did not need to create a new identity environment simply because Azure AD was renamed.

Existing:

• Users
• Groups
• Applications
• Tenants
• Configurations
• Integrations
• Authentication processes

continued to operate.

Microsoft also retained many existing technical names and terminology for compatibility.

This is important because administrators will still encounter Azure AD terminology in older scripts, documentation, tools and discussions.

Q12. Why do administrators still say “Azure AD”?

You may hear both terms in real-world IT environments.

For example, an administrator might say:

“Check the Azure AD Connect server.”

Another administrator might say:

“Check the Microsoft Entra Connect synchronization.”

They may be referring to the same general Microsoft identity ecosystem, although the current product terminology is Microsoft Entra ID and Microsoft Entra Connect.

You’ll also encounter older terminology in:

• PowerShell modules and commands
• Existing automation scripts
• Older documentation
• Older training courses
• Company documentation
• Legacy application configurations
• Interview questions

Therefore, an Azure administrator should understand both the old and new terminology.

Q13. Comparison between Azure AD vs Microsoft Entra ID vs Active Directory

This is where interview candidates sometimes become confused.

So:

Azure AD → renamed Microsoft Entra ID

But:

Windows Server Active Directory → remains a separate product

They can, however, be integrated in a hybrid identity environment.

Important: Microsoft did not rename Windows Server Active Directory to Microsoft Entra ID. Only Azure Active Directory (Azure AD) was renamed. Microsoft continues to support Windows Server Active Directory.

Q14. What terminology should an administrator use today?

When writing new documentation or communicating about the current service, use:

Microsoft Entra ID

Instead of:

Azure Active Directory / Azure AD

However, you should still understand the old terminology because it remains common in the industry.

For example:

Note: Not every Microsoft product or technical term was renamed in exactly the same way, so administrators should check current Microsoft documentation rather than assuming every occurrence of “Azure AD” has simply been replaced word-for-word.

⚠️ Common Interview Mistake

Don’t say:

“Azure AD was replaced by Microsoft Entra ID.”

That can make it sound as though Microsoft created a completely new identity service and organizations had to migrate from one to the other.

A better explanation is:

“Azure Active Directory was renamed Microsoft Entra ID. It is the same underlying cloud identity service, with the new name reflecting Microsoft’s broader Entra identity and access portfolio.”

🎯 Interview Tip

If an interviewer asks:

“What is the difference between Azure AD and Microsoft Entra ID?”

Keep your answer simple:

“There is no separate service difference. Azure Active Directory, commonly called Azure AD, was renamed Microsoft Entra ID in 2023. Microsoft Entra ID is the current name for Microsoft’s cloud-based identity and access management service.”

Then, if the interviewer asks:

“Is it the same as Active Directory?”

That’s your opportunity to explain the difference between Microsoft Entra ID and Windows Server Active Directory Domain Services (AD DS).

Quick Revision

Azure AD → Old name

Microsoft Entra ID → Current name

Windows Server Active Directory → Separate on-premises directory service

Remember: Microsoft Entra ID is not simply “the new version of Windows Active Directory.” It is Microsoft’s cloud identity and access management service.

⚠️ Common Interview Mistake

A common incorrect answer is:

“Microsoft created Microsoft Entra ID to replace Azure AD, so companies had to migrate.”

That’s incorrect.

The important point is:

Azure AD was renamed Microsoft Entra ID.

The name change did not require organizations to create a new tenant or perform a traditional migration from Azure AD to Entra ID.

🎯 Interview Tip

If the interviewer asks:

“Why did Microsoft change the name from Azure AD to Entra ID?”

A strong answer would be:

“Microsoft renamed Azure Active Directory to Microsoft Entra ID in 2023 as part of the broader Microsoft Entra family. The new branding helps distinguish the cloud identity service from Windows Server Active Directory and reflects Microsoft’s broader identity and access capabilities. Existing Azure AD environments continued to work; the rename itself did not require a tenant migration.”

Quick Revision

Azure AD was renamed Microsoft Entra ID in 2023.

The rename was primarily about Microsoft’s broader identity and access strategy and clearer product positioning, not about replacing an existing Azure AD tenant with a new service.

SECTION B — IAM

Q15. What is Identity and Access Management (IAM)?

Identity and Access Management (IAM) is the set of technologies, processes, and policies used by an organization to manage digital identities and control who or what can access resources.

In simple terms, IAM helps an organization answer three questions:

Who are you?
What are you allowed to access?
Under what conditions can you access it?

Microsoft Entra ID is Microsoft’s cloud-based identity and access management service and provides many of the capabilities organizations use to implement IAM in Microsoft cloud environments.

Q16. What are the main components of IAM?

IAM can be understood through several core functions.

1. Identity

An identity represents a person, application, device, service, or other entity that needs to interact with a resource.

Examples include:

• An employee
• An administrator
• A guest user
• A laptop
• An application
• A service or workload

For example:

john@abc.com

could represent an employee’s identity in Microsoft Entra ID.

2. Authentication

Authentication verifies that an identity is actually who or what it claims to be.

For example, when John signs in, Microsoft Entra ID may verify his identity using:

• Password
• Microsoft Authenticator
• FIDO2 security key
• Windows Hello for Business
• Other supported authentication methods

A simple way to remember it:

Authentication = “Who are you?”

3. Authorization

After authentication, the organization needs to determine what the identity is allowed to do.

This is authorization.

For example:

John may be allowed to:

• Read a SharePoint site
• Access Microsoft Teams
• Manage certain Azure resources

But he may not be allowed to:

• Delete the organization’s Azure resources
• Modify Conditional Access policies
• Assign himself administrative roles

A simple way to remember it:

Authorization = “What are you allowed to do?”

4. Access Control

IAM also determines under what circumstances an identity can access a resource.

For example, an organization could require:

“Users must perform MFA when accessing sensitive applications from an untrusted location.”

Microsoft Entra Conditional Access can be used to implement this type of policy.

This introduces another important IAM question:

“Under what conditions should access be allowed?”

5. Identity Lifecycle Management

IAM isn’t only about signing users in.

Organizations also need to manage identities throughout their lifecycle.

For example:

Employee joins company
        ↓
User account created
        ↓
Access assigned
        ↓
Employee changes department
        ↓
Access updated
        ↓
Employee leaves company
        ↓
Account disabled / access removed

This helps organizations ensure that users have appropriate access throughout their employment.

Authentication vs Authorization

This is one of the most frequently tested IAM concepts in interviews.

Simple example

Imagine an employee signs into Microsoft 365.

Step 1 — Authentication

Microsoft Entra ID verifies the employee’s identity.

Step 2 — Access evaluation

Microsoft Entra ID and other Microsoft services evaluate applicable access controls.

Step 3 — Authorization

The employee receives access to the resources they are permitted to use.

So:

Authentication gets you identified. Authorization determines what you’re allowed to access.

Q17. How does Microsoft Entra ID fit into IAM?

Microsoft Entra ID provides many IAM capabilities for cloud environments.

For example:

Identity management

→ Users, groups, devices, applications

Authentication

→ Passwords, MFA, passwordless authentication

Access control

→ Conditional Access and role-based access

Application access

→ Enterprise applications and Single Sign-On

Privileged access

→ Microsoft Entra roles and Privileged Identity Management

Identity protection

→ Detection and response to identity-related risks

This is why Microsoft Entra ID is an important component of an organization’s overall IAM strategy.

Q18. Difference between IAM vs Microsoft Entra ID

Another common interview question is:

“Is IAM the same as Microsoft Entra ID?”

No.

IAM is a broader concept/discipline.

Microsoft Entra ID is a specific Microsoft service that provides identity and access management capabilities.

Think of it this way:

IAM = the overall discipline

Microsoft Entra ID = Microsoft’s cloud service used to implement many IAM capabilities

Other vendors also provide IAM solutions.

Real-world example

Consider an organization with 5,000 employees.

The organization wants to ensure that:

• Employees can access Microsoft 365.
• Administrators use MFA.
• Users can access applications according to their job roles.
• Former employees lose access when they leave.
• High-risk sign-ins are restricted.
• External users have controlled access.
• Privileged administrators receive only the permissions they need.

These requirements fall under the broader Identity and Access Management discipline.

Microsoft Entra ID can provide many of the capabilities required to implement these controls in Microsoft’s cloud ecosystem.

⚠️ Common Interview Mistake

Don’t say:

“IAM is only about usernames and passwords.”

IAM is much broader.

It includes areas such as:

• Identity lifecycle
• Authentication
• Authorization
• Access control
• Privileged access
• Application identities
• Device identities
• Identity security

Modern IAM is about ensuring that the right identity gets the right access to the right resource under the right conditions.

🎯 Interview Tip

If an interviewer asks:

“What is IAM?”

A strong answer would be:

“Identity and Access Management, or IAM, is the framework of technologies, processes and policies used to manage digital identities and control access to resources. It includes identity management, authentication, authorization, access control and identity lifecycle management. Microsoft Entra ID is Microsoft’s cloud-based identity and access management service.”

If they then ask:

“What is the difference between authentication and authorization?”

Answer:

“Authentication verifies who the user or identity is, while authorization determines what that authenticated identity is allowed to access or do.”

🔗 Related Interview Questions

Also know :

• Q6. What is a Microsoft Entra ID Tenant?
• Q24. Can one Tenant have multiple Azure subscriptions?
• Q28. What happens when a user signs in?