Hello. We recently started using Office 365 Skype for Business. We setup a single server instance of ADFS on Windows 2012 R2 so we could single sign-on to Office 365. This is just a single Windows 2012 R2 box with the ADFS role installed. We aren't using the ADFS Proxy. We also use ADFS for Federation with some other outside entities. We are now looking to utilize Office 365 even more and we need a geographically dispersed ADFS solution. We should have setup a more robust ADFS infrastructure from the beginning but we didn't. I've seen plenty of guides for migrating from older versions of ADFS to ADFS on Windows 2012 R2 but I haven't seen anything showing if you can migrate from single server to a farm. Is that possible or would we need to just start from scratch? Ideally we'd like to setup something in parallel and migrate by just making a DNS change. Also, can a Windows 2012 R2 ADFS farm using the Windows Internal Database be geographically dispersed?