Secure apps for production

With the core components in place, the next step is making them work together securely. Instead of exposing connection details directly, we'll rely on Azure Key Vault to safeguard secrets and let our Function App access them through secure references. At the same time, the Web App will be configured to call the Function endpoint so customer actions can trigger the back-end processing. This brings our solution closer to a production setup, where secure communication and proper separation of responsibilities are key.