This post explains how to secure Azure Functions with Azure Active Directory B2C. To get started, we need to create an application in Azure B2C, configure the redirect URL, and grant admin consent to openid and offline_access permissions. Then, we need to configure authentication token types and create a secret, and finally, add an identity provider to our Azure Function. We can test it by invoking the Azure Function using Postman and getting a token from Azure B2C - User Flows. This post provides a step-by-step guide with screenshots and code snippets for reference. Overall, this approach provides an extra layer of security to our Azure Functions by integrating it with Azure AD B2C.
