Microsoft recently added two-factor authentication to its own Outlook.com just a few months back. Now multi-factor authentication is available as a service on Windows Azure.
Multi-Factor Authentication quickly enables an additional layer security for users signing in from around the globe. In addition to a username and password, users may authenticate via: 1) An application on their mobile device. 2) Automated voice call. 3) Text message with a passcode.
- On-Premises VPNs, Web Applications, and More – Run the Multi-Factor Authentication Server on your existing hardware or in a Windows Azure Virtual Machine. Synchronize with your Windows Server Active Directory for automated user set up.
- Cloud Applications like Windows Azure, Office 365, and Dynamics CRM – Enable Multi-Factor Authentication for Windows Azure AD identities with the flip of a switch, and users will be prompted to set up multi-factor the next time they sign-in.
- Custom Applications — Use our SDK to build Multi-Factor Authentication phone call and text message authentication into your application’s sign-in or transaction processes.
Windows Azure Multi-Factor Authentication offers two pricing options: $2 per user per month or $2 for 10 authentications. Visit the pricing page to learn more.
Source: Scott Guthrie