We are excited to announce that now you can have greater control over your web API’s when you secure them using Azure AD B2C. The public preview is now enabled for using access tokens with your web API’s.
This is a powerful feature that many of you have been asking for. The introduction of this feature makes it possible to create web API’s that can be accessed by different client applications. You can even grant permissions to your API on an app-to-app basis. By having more control over who can access your API, you will be able to develop apps with tighter security.
Read more on the Azure blog.