title: When registering an app on Azure Active Direct, what "redirect URI" or "Sign-on URL" should I use?
body: <p>Might seem a silly question, but Microsoft's documentation isn't very beginner friendly, I think. It uses as examples "<a href="http://localhost:31544" rel="noreferrer">http://localhost:31544</a>" for the sign-on url and "<a href="http://MyFirstAADApp" rel="noreferrer">http://MyFirstAADApp</a>" for the redirect URI, but although I understand what a local host is I can't figure out what exactly the numbers on it are and how I define them for my application, and absolutely zero clue of what the redirect URI is supposed to do for a native application and how should I define a URI for my own.</p>
  
  <p>To be more clear on what kind of app I'm trying to add, I merely want to acess the Office 365 management API tools and get some data from it, so I imagine a native app would fulfill my needs for now. Registering the app on Azure AD is required to do so according to Microsoft's documentation.</p>
  
  <p>So expanding on the title, how to define an URI for my native app is what I would mainly like to know. Some further clarification on what exactly is the purpose of this URI as well as to how to use and/or define a localhost URL for an Web app  would also be much appreciated.</p>