In addition to authentication with Azure AD, Azure Functions provide a built-in integration with a number of third-party identity providers such as Google and Twitter. This allows your users to seamlessly sign up and start using your application using one of their existing social media identities.
When authenticating with a third-party provider, you will need to start by configuring an authentication "application" for your Function App with the identity provider. In some cases, you will first need to sign up for a "developer" program with the provider, which is, typically, free. Each provider has their own process of creating and configuring an authentication application. Similar to the process in AAD, the provider's ...
