What is a Function App?

A Function App is a Microsoft Azure Functions construct. Essentially it is a group of one or more Microsoft Azure Functions. You can deploy Azure Functions as part of a Microsoft Azure Function App to deploy and manage them collectively.

You must have a Microsoft Azure function app to host the execution of your functions. A function app lets you group functions as a logical unit for easier management, deployment, scaling, and sharing of resources.

What is an Azure Function?

Azure Functions lets you run code in a serverless environment without having to create a virtual machine or publish a web application.