Important: if using Consumption mode, please use https://github.com/Azure/azure-quickstart-templates/tree/master/101-function-app-create-dynamic instead
Azure functions is a solution for easily running small pieces of code, or "functions," in the cloud. You can write just the code you need for the problem at hand, without worrying about a whole application or the infrastructure to run it. For more information about Azure Functions, see the Azure Functions Overview.