Exchange 2010 in Hybrid mode - How to upgrade to Exchange 2016/2019 and maintain Hybrid mode
All mailboxes and Public Folders are in Exchange Online and I am maintaining Exchange 2010 on premise in Hybrid mode. What is the correct procedure to introduce an Exchange Server 2016/2019 to replace my old Exchange server in the above circumstances? From what I have read, I would have to move to Exchange 2016 initially as this is the latest version that will allow co-existence. I think. If I stage it, is it simply a case of re-running the hybrid wizard to re-establish Hybrid on the new Exchange server? Would I have to break hybrid mode on the old Exchange server first?