I'm trying to setup SharePoint to use Azure AD. I'm following this article to do that.
https://technet.microsoft.com/en-us/library/dn635311.aspx
I'm a bit confused. I would like to use an existing tenant and namespace so I skipped the section "create a new Azure AD tenant and an associated namespace" but now it seems like I still need to run those Powershell commands because I get an error (Relying party with identifier was not found.) when I go to use that ID provider.
My question is: What is those commands doings? I have to be able to communicate to someone about what I need for them to do.