By default, FreeBusy works with Microsoft Entra ID. To get started, sign up for FreeBusy using an account in your instance of Microsoft Entra ID.

* Enterprise Single Sign-On - Microsoft Entra ID supports rich enterprise-class single sign-on with FreeBusy out of the box. Users sign in using their organizational accounts hosted in Active Directory.

* Easy Configuration - Microsoft Entra ID provides a simple step-by-step user interface for connecting FreeBusy to Microsoft Entra ID.