App Service Auth and Azure AD B2C (Part 2)

EDIT 1/23/2017: Updated token refresh section with simplified instructions and added code snippets. This post is a continuation of my previous post on App Service Auth and Azure AD B2C, where I demonstrated how you can create a web app that uses Azure AD B2C without writing any code. If you haven’t done so already, be sure to read that post to get proper context for this one. In a recent service update, we’ve improved our overall support for B2C in Azure App Service.

App Service Auth and Azure AD Domain Hints

When creating web, mobile, API, or Function apps for use by members of your organization, it’s often the case that you’re using Azure Active Directory and you want to remove the option to log in with non-organizational credentials. For example, you want to prevent users from accidentally logging in with MSA credentials (,,, etc.). This can be done by leveraging what’s known as a domain hint when navigating users to the Azure AD login page.

Creating a Corporate Wiki in Azure

Using Azure App Service and Azure Active Directory (AAD), it’s possible to create a MediaWiki-based web app for use within your organization with minimal setup and for little or no cost. If you’re not familiar with MediaWiki, it’s the same open source platform which powers Wikipedia. A few folks within Microsoft surprised me when they created internal wikis using my Easy Auth feature (Authentication / Authorization) so I thought I’d try it out for myself and do a quick write-up on it.

App Service Auth and Azure AD B2C

An exciting new preview feature which was recently added to Azure Active Directory is Azure Active Directory B2C. “B2C” stands for “Business to Consumer” and allows a developer to add user and login management to their application with very little (if any) coding. This also includes login integration with social identity providers like Facebook, Amazon, LinkedIn, etc. Check out their documentation and blog posts for more details. My colleague Swaroop from the Azure AD team also has a nice //build video where you can see it in action.

App Service Auth and the Azure AD Graph API

This post demonstrates how an App Service Web, Mobile, or API app can be configured to call the Azure Active Directory Graph API on behalf of the logged-in user. If you haven’t read it already, this post extends from my previous one on the Azure App Service Token Store. Configuration The default setup for Azure AD that we use does not include the configuration required for your app to call into the Graph API.

App Service Token Store

The App Service Token Store is an advanced capability that was added to the Authentication / Authorization feature (a.k.a. “Easy Auth”) of App Service. Like the name implies, the token store is a repository of OAuth tokens that are associated with the end-users of your app. When a user logs into your app via an identity provider, such as Azure Active Directory or Facebook (or any of the other supported providers), the identity provider provides one or more tokens that 1) prove the user’s identity and may also 2) provide access to resources owned by that user.

Architecture of Azure App Service Authentication / Authorization

Authentication / Authorization (which I’ll refer to as Easy Auth throughout this post) is a feature of Azure App Service that allows you to easily integrate a variety of auth capabilities into your web app or API. It’s built directly into the platform and doesn’t require any particular languages, SDKs, security expertise, or even any code to utilize. This is why we call it easy - anybody can leverage it, even non-developers, with just a few clicks in the management portal.