What is Entra ID? (Previously Azure AD)

Microsoft Entra ID is Microsoft’s cloud-based identity and access management (IAM) service.

In simple terms, it helps organizations manage:

• Users and groups

• Login authentication

• Single Sign-On (SSO)

• Multi-Factor Authentication (MFA)

• Access to cloud applications like Microsoft 365, Azure, Salesforce, ServiceNow, and more

Key Points:

• Fully cloud-based directory service

• Designed for cloud and SaaS applications

• Supports MFA, Conditional Access, and Zero Trust

• Enables Privileged Identity Management (PIM)

• Ideal for organizations using Microsoft 365 or Azure Cloud

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What is Active Directory (AD)?

Active Directory Domain Services (AD DS) is Microsoft’s on-premises directory service, typically installed on Windows Servers.

In simple terms, it manages:

• Computers, users, and permissions within a company network (LAN)

Key Points:

• On-premises solution (hosted on company servers)

• Works with domain-joined devices, Group Policies, and Kerberos authentication

• Manages desktops, laptops, and servers inside the office

• Provides centralized access control within a corporate network

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Quick Example:

• Logging into Office 365 or Azure Portal → Managed by Entra ID

• Logging into an office computer connected to the domain → Managed by Active Directory

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