Summary: Determine whether to deploy Project Web App to a new site collection or add it to an existing site collection. Applies to: Project Server Subscription Edition, Project Server 2019, Project Server 2016
Before we get started configuring Project Web App, here are two important things if you've used earlier versions of Project Server:
If you are upgrading from a previous version of Project Server, you will deploy Project Web App as part of the upgrade process. Read Upgrade to Project Server 2016 instead of this article.
In Project Server Subscription Edition, 2019, or 2016, a Project Web App site is created by using Microsoft PowerShell. There's no longer a Create Project Web App Instance button in the SharePoint Central Administration website. We'll give you the details in the topics below.
There are two options for deploying Project Web App. You can either create a Project Web App site as the top level of a new site collection, or you can add a Project Web App site to an existing site collection.