The architecture of Microsoft Exchange Server 2016 includes the Edge Transport Role server role. Below you will find a step-by-step tutorial for installing the Edge Transport Role using the command line.

1. Right click Windows PowerShell and select Run as Administrator.
2. Execute the following command to install Active Directory Lightweight
   Directory Services (ADLDS).
   1. Install-WindowsFeature ADLDS
3. Install Microsoft .NET Framework 4.5.2.
4. Execute the following command to install the Edge Transport Server role.
   1. Setup.exe /mode:install /role:EdgeTransport /IAcceptExchangeServerLicenseTerms
5. Execute the following command to create the Edge subscription file.
   1. New-EdgeSubscription -FileName C:\Microsoft Exchange\Edge_Subscription_File.xml
6. Copy the subscription file to a folder on the server hosting the Mailbox Server role.
7. Run the following command on the Mailbox Server Role server to import the Edge subscription file and subscribe the Edge Transport server to the Active Directory site named Default-First-Site-Name.
   1. New-EdgeSubscription -FileData ([byte[]]$(Get-Content -Path “C:\Microsoft Exchange\Edge_Subscription_File.xml” -Encoding Byte -ReadCount 0)) -Site “Default-First-Site-Name”
8. On the Mailbox Server Role server execute the following command to start the synchronization between the Mailbox Server Role and the Edge Transport Server role.
   1. Start-EdgeSynchronization