Active Directory Federation Services (ADFS) is a technology that allows organizations to provide single sign-on (SSO) authentication for users to access Office 365 and other cloud services.

When an organization uses ADFS with Office 365, users can log in once using their existing credentials, such as their Active Directory username and password, and then access all of the cloud services they are authorized to use without having to enter their credentials again. This can simplify the sign-in process for users and reduce the risk of password fatigue or credential misuse.

In addition to providing SSO, ADFS can also enable additional security features, such as multi-factor authentication and conditional access policies, to help ensure that only authorized users can access sensitive data in Office 365.

Overall, ADFS is a valuable tool for organizations that want to streamline access to Office 365 and other cloud services while maintaining strong security controls.

BY Best Interview Question ON 28 Feb 2023