Our Company is looking for an ADFS solution for our new ITSM which will be Cloud based. Our setup is we have a Forest root domain (ex. Main.com) located in remote location, we are only one among 10 child domains (Ex. Child1.Main.com). My colleague suggests if we could use a single FS Proxy in our site and it would cater the rest for the 9 other child domains. May i ask what would be the best approach on this? We are looking for a low cost possible solution.