In both of the previous recipes, you learned how to create and execute Azure Functions in a local environment. We triggered the function from a local browser. However, in this recipe, you will learn how to trigger an Azure Function in your local environment when an event occurs in Azure. For example, when a new Blob is created in a Azure Storage account, you can have your function triggered on your local machine. This helps developers test their applications upfront, before deploying them to the production environment.