One Windows Small Business Server 2011.
45 desktop computers running Windows 7 Pro with Outlook 2010.
75 user accounts.
250GB Exchange Mailbox Database.
Multiple Email Groups.
Multiple Security Groups.
Remote Web Workplace in regular use.
5 remote laptops using Exchange and not joined to the domain.
Replace the one server running SBS 2011 Server with two servers with one new server as a Windows 2012 Standard Domain/File server and the other new server as a Windows 2016 Exchange Server.
Enable Remote Web Workplace on the new server.
Avoid having going to each computer to modify user profiles or Outlook settings.
What is the easiest way to migrate from a single SBS 2011 Server to a pair of 2012 Standard servers with one as the domain/file server and the other as the Exchange 2016 server?