title: How to validate AzureAD accessToken in the backend API
body: <p>I just wanted to know how can we validate the azure ad access token in a backend API in my case i.e. Django rest framework.</p>
  <p>Consider that I have a single page app or a native app and a backend API (django rest framework) completely independen of each other. In my case if my single page app/native app wants to access certain data from the backend API, and inorder to access the API, user should be logged in the backend API.</p>
  <p>So what my approch is to make use of MSAL library to get the access token from the SPA/native app and then once token is acquired, pass that token to backend API, validate it, get the user info from graph api. If user exists in the DB then login the user and pass the required info. If user info doesn't exist then create the user, login and pass the info from the  API.</p>
  <p>So my question is when I pass the access token to my backend api, how can I validate that the token that a user/SPA/native app has passed to backend API is valid token or not?</p>
  <p>Is it just we need to make an API call to graph API endpoint with accessToken that user/SPA/native passed and if it is able to get the user data with the accessToken then then token is valid or if it fails then the accessToken is invalid.</p>
  <p>Is it the general way to validate the token or some better approach is there? Please help</p>