As you may know, Azure Active Directory (AAD) is not only used to manage corporate identity and access but you can also rely on Azure AD capabilities to manage your consumer identity when integrated with your applications or web sites. This is Azure AD B2C (Business to Consumer).
Well good news, there are quite few new identity providers to integrate with to let your consumers using their own social identity to authenticate with your applications/websites.
These new providers are mainly from the China market (Weibo, QQ or WeChat) but also (this makes sense since Microsoft bought it) GitHub.
To start using them, connect to your Azure AD B2C administration portal and reach the Identity Providers configuration blade to start adding these new providers.