💥Implement App Registrations with Microsoft Entra ID 📢

Introduction:

App registration in the context of Microsoft Entra involves creating an application in the Azure portal, which allows your application to authenticate and interact with Microsoft 365 services using the Microsoft Graph API. Below, I'll provide more details about the key steps involved in app registration.

App Registration Process:

1. Azure Portal:

• Navigate to Azure Portal:

  • Go to Azure Portal and sign in with your Microsoft 365 account.

• Access Microsoft Entra ID:

• In the left sidebar, select "Microsoft Entra ID."
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2. Create a New App Registration:

• Select "App registrations":

  • Under the "Manage" section in Microsoft Entra ID, select "App registrations."
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• Create a New Registration:

• Click on "New registration" to start the app registration process.
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• Provide a meaningful name for your application.
• Choose the appropriate account types (single or multi-tenant).
• Set the Redirect URI, which is where the authentication response will be sent after a successful login. For example, http://localhost:3000/auth/callback.
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3. Configure Authentication:

• Generate Client Secrets:

• In the registered application, navigate to "Certificates & secrets" to generate a client secret. Note down the generated value; it will be used for authenticating your application.
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• Define Redirect URIs:

  • In the application settings, under "Authentication," define the Redirect URIs allowed for your application.
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• Grant API Permissions:

  • In the application settings, under "API permissions," configure the required permissions based on the Microsoft Graph API operations your application will perform. Common permissions include User.Read for reading user profiles.
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4. Application Configuration:

• Obtain Application (Client) ID and Directory (Tenant) ID:
• After registration, note down the "Application (client) ID" and "Directory (tenant) ID." These values are crucial for your application to authenticate and authorize against Microsoft 365 services.

5. Implement Authentication in Your Application:

• Authentication Flow:

  • Implement the OAuth 2.0 authentication flow in your application to obtain an access token. This involves redirecting users to the Microsoft login page, handling the callback, and exchanging the authorization code for an access token.

• Graph API Endpoint:

• Once authenticated, your application can use the obtained access token to make requests to the Microsoft Graph API. For example, retrieve user profiles or perform other operations.

Sample Node.js Code for Authentication:

"const express = require('express');

const axios = require('axios');

require('dotenv').config();

const app = express();

const PORT = process.env.PORT || 3000;

app.get('/', (req, res) => {

  const authUrl = `https://login.microsoftonline.com/${process.env.TENANT_ID}/oauth2/v2.0/authorize?client_id=${process.env.CLIENT_ID}&response_type=code&redirect_uri=${process.env.REDIRECT_URI}&scope=User.Read`;

  res.redirect(authUrl);

});

app.get('/auth/callback', async (req, res) => {

  const { code } = req.query;

  // Exchange the code for an access token

  // ... (Code varies based on runtime and language)

  res.send('Authentication successful!');

});

app.listen(PORT, () => {

  console.log(`Server is running on port ${PORT}`);

}); "

Conclusion:

By following these detailed steps, you can successfully register an application in the Azure portal for Microsoft Entra, configure authentication settings, and integrate it with the Microsoft Graph API to enhance your collaborative platform. Remember to adapt the provided information to the specific runtime and programming language you are using.