Tutorial: Secure Azure Functions with Azure App Registration

Power Platform - General

The article discusses the importance of securing Azure functions, especially those with Http triggers.
It highlights the limitations of using access keys for security and the need for additional measures to protect HTTP endpoints in production.
The solution proposed is to use Azure App Registration, which involves creating an application in Azure AD and configuring its permissions to manage access to Azure resources through OAuth 2.0 and OpenID Connect protocols.
The process of securing Azure functions using Azure App Registration is detailed, including navigating to the Azure function app in the Azure portal, setting up authentication, and adding identity providers.
Accessing the secured Azure function URL in the browser requires valid credentials, and using OAuth credentials (tenantid, clientid, client secret) from the App registration is needed to connect from a postman or any rest client.
The walkthrough emphasizes the importance of using Azure App Registration for securing Azure functions and managing access to resources based on specific use cases and security requirements.
It concludes by highlighting the steps taken to secure Azure functions using Azure App Registration and the significance of implementing proper security measures for production environments.
The overall message of the article is to prioritize security measures such as Azure App Registration to ensure that only authorized entities can access and invoke Azure functions.

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