Azure Active Directory B2C
is a new service built on the Azure AD platform that helps you stay connected with your consumers. It is an enterprise-grade, multi-tenant, cloud service that supports authentication with top consumer identity services such as Facebook and Google.
It is easy to store and manage hundreds of millions of consumer identities in a secure, reliable, scalable, cost-effective service. Like the rest of Azure AD, it is open-standards-based and cross-platform, so that you can add modern identity and security capabilities to your iOS, Android, Windows, and browser-based applications and services.
For more information, see: