Azure AD B2C: Customer Identity Management

Azure Identity Authentication B2C

I wrote “Azure AD B2C: Customer Identity Management” to share practical, production-minded guidance on this topic.

Key Features

Social identity providers (Google, Facebook, Apple)
Local accounts (email + password)
Custom policies for complex flows
Self-service password reset
MFA support
Custom UI branding

Setting Up

Create Azure AD B2C tenant
Register your application
Create user flows or custom policies
Integrate with your app

User Flows

Built-in flows for common scenarios:

Sign up and sign in
Password reset
Profile editing

Custom Policy Example

<TrustFrameworkPolicy>
  <UserJourneys>
    <UserJourney Id="SignUpOrSignIn">
      <OrchestrationSteps>
        <OrchestrationStep Order="1" Type="CombinedSignInAndSignUp">
          <ClaimsProviderSelections>
            <ClaimsProviderSelection ValidationClaimsExchangeId="LocalAccountSigninEmailExchange"/>
            <ClaimsProviderSelection TargetClaimsExchangeId="GoogleExchange"/>
          </ClaimsProviderSelections>
        </OrchestrationStep>
      </OrchestrationSteps>
    </UserJourney>
  </UserJourneys>
</TrustFrameworkPolicy>

React Integration

import { PublicClientApplication } from "@azure/msal-browser";

const msalConfig = {
  auth: {
    clientId: "your-client-id",
    authority: "https://yourtenant.b2clogin.com/yourtenant.onmicrosoft.com/B2C_1_signupsignin",
    knownAuthorities: ["yourtenant.b2clogin.com"]
  }
};

const pca = new PublicClientApplication(msalConfig);

// Login
pca.loginPopup({ scopes: ["openid", "profile"] });

// Get token
const token = await pca.acquireTokenSilent({ scopes: ["api://your-api/access"] });

Pricing

First 50,000 MAU (Monthly Active Users) free
$0.00325 per additional MAU
MFA: $0.03 per authentication

B2C handles the complexity of customer identity so you can focus on your application.\n\n## Takeaways\n\nAdd a concise, personal takeaway and recommended next steps here.\n