Microsoft Entra ID

Microsoft Entra ID (formerly Microsoft Azure Active Directory or Azure AD) is a cloud-based identity and access management (IAM) solution. It is a directory and identity management service that operates in the cloud and offers authentication and authorization services to various Microsoft services like Microsoft 365, Dynamics 365, Azure, and cloud-based applications. Entra ID provides users with single sign-on experience, regardless of whether their applications are cloud-based or on-premises.

Not to be confused with Active Directory.
DeveloperMicrosoft
TypeCloud-based identity management service
Platform(s)Cross-platform
StatusActive
WebsiteOfficial Site

Entra ID offers many authentication methods, including password-based, multi-factor, smart card, and certificate-based authentication. It also includes several security features, such as Conditional Access policies, risk-based authentication, and identity protection.[1]

On July 11, 2023, Microsoft announced the renaming of Azure AD to Microsoft Entra ID to improve consistency with other Microsoft cloud products.[2] This decision received a largely negative response from the security community.[3] The name change took place on July 15, 2023.[4]

Service Limits and Restrictions [5]
Category Limit
Tenants
  • A user can belong to a maximum of 500 AAD tenants.
  • A user can create a maximum of 200 directories.
  • 300 license-base subscriptions
Domains
  • No more than 5000 managed domain names.
Resources

(users, devices, identities, applications)
  • Max of 50,000 Azure AD resources.
  • Non-Admin user can create no more than 250 resources.
Schema Extensions
  • Max 256 characters for String-type extensions.
  • Max 256 bytes for Binary-type extensions.
  • Only 100 extension values across all types and all applications.
  • Only User, Group, Tenant Detail, Device, Application and Service Principal entities can be extended.
Applications
  • Max 100 users and service principals can be owners of an application.
  • A user, group or service principle can have max of 1,500 app role assignments.

See also

References
  1. Moniz, Hencita (7 March 2023). "Azure Active Directory and identity management". Skillzcafe. Retrieved 2023-04-10.
  2. Chik, Joy (2023-07-11). "Microsoft Entra expands into Security Service Edge and Azure AD becomes Microsoft Entra ID". Microsoft Security Blog. Retrieved 2023-07-12.
  3. Kunert, Paul (2023-07-12). "Microsoft Azure AD name change causes consternation". The Register. Retrieved 2023-07-12.
  4. "New name for Azure Active Directory - Microsoft Entra". 29 August 2023.
  5. barclayn (2023-03-16). "Service limits and restrictions - Microsoft Entra". learn.microsoft.com. Retrieved 2023-06-06.

Further reading
  • Zaal, Sjoukje (2022). Azure Active Directory for Secure Application Development: Use modern authentication techniques to secure applications in Azure. Packt Publishing. ISBN 978-1838646509.
  • Mayank, Manas; Garg, Mohit (2019). Developing Applications with Azure Active Directory: Principles of Authentication and Authorization for Architects and Developers. Apress. ISBN 978-1484250396.
  • Bertocci, Vittorio (2016). Modern Authentication with Azure Active Directory for Web Applications. Microsoft Press. ISBN 978-0735696945.
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