Active Directory Federation Services

Ganesh Chauhan, Technical Support Specialist, Microsoft Azure.

A Federation is a collection of domains that have developed trust. The amount of trust varies, but it nearly always requires authentication and almost always includes authorization. A typical federation would consist of a number of groups that have developed trust in order to share access to a set of resources.

You can federate your on-premises infrastructure with Azure AD and use this federation for authentication and permission. This sign-in mechanism assures that all user authentication takes place on-premises. This method enables administrators to set more stringent levels of access restriction. Federation with AD FS and PingFederate is possible.

How Federation Work: –

Azure Active Directory (Azure AD) Connect allows you to configure federation using on-premises Active Directory Federation Services (AD FS) and Azure AD. You may utilize federation sign-in to allow users to sign in to Azure AD-based services using their on-premises passwords—and without having to enter their passwords twice while on the corporate network. You can use the federation option with AD FS to deploy a new installation of AD FS or to specify an existing installation on a Windows Server 2012 R2 farm.

Note: – If you want to use Federation with Active Directory Federation Services (AD FS), you can optionally configure password hash synchronization as a backup in the event that your AD FS infrastructure fails.

Azure AD federation compatibility list: –

Azure Active Directory enables single-sign-on and increased application access security for Microsoft 365 and other Microsoft Online services in hybrid and cloud-only deployments without the need for a third-party solution. Microsoft 365, like the majority of Microsoft’s Online Services, is connected with Azure Active Directory for directory services, authentication, and authorization. Azure Active Directory also offers single sign-on to hundreds of SaaS and on-premises web apps. Supported SaaS applications can be found in the Azure Active Directory application gallery.

IDP Validation: –

If your business employs a third-party federation solution, you can configure single sign-on for your on-premises Active Directory users with Microsoft Online services like Microsoft 365, as long as the third-party federation solution is compatible with Azure Active Directory. Please contact your identity provider if you have any issues with compatibility. See Azure AD identity provider compatibility documents for a list of identity providers that Microsoft has previously validated for compatibility with Azure AD.

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