Both entities create a federation. The federation is actually to the Microsoft Federation Gateway (recently renamed to the Azure Authentication System). The AAS mediates access between the two orgs.
Most people do some type of GAL sync between the two organizations so that you can easily look up people by name and company. It can be done via a small PowerShell script on each side and that's what I usually do. -----Original Message----- From: listsad...@lists.myitforum.com [mailto:listsad...@lists.myitforum.com] On Behalf Of Michael Tavares Sent: Thursday, December 8, 2016 7:50 PM To: exchange@lists.myitforum.com Subject: [Exchange] Exchange 2016 Federation with Exchange 2013 So I have been fortunate in my career to not have to deal with companies being bought/sold merging, etc that required 2 completely separate Exchange Environment's to be able to exchange email and free busy info. So I have a couple of questions for those of you that have done this in the past. 1. what is the best approach to take so that we can look them up in our Exchange Environment and they can look us up in theirs? 2. I have read up on Federation but I still a little fuzzy on how the whole thing works. I am assuming since it says we can look up their free/busy info (and them ours) that it must give us some way of looking them up in the Gal right?
