Active Directory Federation Services - ADFS on Windows Server 2025

Active Directory Federation Services provides access control and single sign on (SSO) across a wide variety of applications including Microsoft Office 365, cloud based SaaS applications, and applications on the corporate network.

ADFS - Key Benefits

For IT organizations - Enables you to provide sign on and access control to both modern and legacy applications, on premises and in the cloud, based on the same set of credentials and policies
For Users - Provides seamless sign on using the same, familiar account credentials
For Developers - Provides an easy way to authenticate users whose identities live in the organizational directory so that you can focus your efforts on your application, not authentication or identity

Eliminate Passwords from the Extranet

Sign in with Azure Multi-factor Authentication
Password-less Access from Compliant Devices
Sign in with Windows Hello for Business

Secure Access to Applications

Modern Authentication
Configure access control policies without having to know claim rules language
Enable sign on with non-AD LDAP directories

Manageability and Operational Enhancements

Streamlined auditing for easier administrative management
Improved interoperability with SAML 2.0 for participation in confederations
Simplified password management for federated O365 users

ADFS Common Use Cases

Enable single sign-on for Office 365 and Microsoft 365 services
Provide secure external access to internal web applications
Integrate cloud SaaS applications with on-premises Active Directory
Enable multi-factor authentication for enhanced security
Support hybrid identity scenarios across on-premises and cloud environments
Federate identity with business partners and external organizations

ADFS Integration Capabilities

Native integration with Azure Active Directory
Support for WS-Federation, SAML 2.0, and OAuth 2.0 protocols
Compatible with thousands of pre-integrated SaaS applications
REST API support for custom integrations
Works with Web Application Proxy for secure external access
Seamless integration with SharePoint, Exchange, and Microsoft 365

ADFS Management and Monitoring Features

Web-based management console for easy administration
PowerShell cmdlets for automation and scripting
Detailed logging and auditing capabilities
Integration with Azure Monitor for cloud-based monitoring
Health monitoring and alerting for service availability
Event log integration for centralized security monitoring

ADFS Protocol Support

WS-Federation - Primary protocol for browser-based applications and enterprise SSO
SAML 2.0 - Industry standard for enterprise SSO and SaaS application integration
OAuth 2.0 - Modern authentication protocol for APIs and mobile applications
OpenID Connect - Authentication layer built on top of OAuth 2.0 for identity verification
WS-Trust - For rich client applications and legacy system integration
Support for multiple protocols simultaneously for diverse application requirements

ADFS Deployment Architecture

Single Server Deployment - Suitable for small environments, testing, and development scenarios
ADFS Farm Configuration - Multiple ADFS servers with Windows Internal Database or SQL Server backend
High Availability Setup - Load balanced configuration with shared configuration database for enterprise deployments
DMZ Integration - Works with Web Application Proxy for secure external access without VPN
Hybrid Cloud Architecture - Integrates with Azure AD Connect for synchronized hybrid identity scenarios
Geographic Distribution - Supports multi-site deployments for global organizations

ADFS Support

Need help setting up your ADFS environment? Follow our getting started guiding on running ADFS in Azure - How to setup ADFS Farm

Disclaimer: Microsoft, Windows Server, Active Directory, and AD FS are registered trademarks of Microsoft Corporation. This solution is provided "as-is" without warranty of any kind, express or implied. Use at your own risk. The user assumes full responsibility for any damages resulting from the use of this software.

ADFS on Windows Server 2025

από Cloud Infrastructure Services