Sometimes you have a need to call an Azure Function with Azure AD enabled authentication from Logic App or from another Function or Azure Web App. For example, you have an API for your SPFx solution and also have a requirement to build a Logic App, which uses some methods from the web API. In that case, you should somehow perform the authentication to call your Azure AD protected function. You can easily solve this problem with Managed Identity. 

Let's see how it works in practice. More...