To find a complete list of system requirements across all the Signature modules, refer to Signature System Requirements.

Install the .NET Core Windows Server Hosting bundle

Install the .NET Core Windows Server Hosting bundle on the hosting system. The bundle installs the .NET Core Runtime, .NET Core Library, and the ASP.NET Core Module. The module creates the reverse proxy between IIS and the Kestrel server. If the system doesn't have an Internet connection, obtain and install the Microsoft Visual C++ 2015 Redistributable before installing the .NET Core Windows Server Hosting bundle. Important! If the hosting bundle is installed before IIS, the bundle installation must be repaired. Run the hosting bundle installer again after installing IIS.
Restart the system or execute net stop was /y followed by net start w3svc from a command prompt. Restarting IIS picks up a change to the system PATH made by the installer.

Obtain a Mapping API Key

If you will be using the Mapping feature, you will also need to obtain a Google or Bing Mapping API key:

Google Maps: https://cloud.google.com/maps-platform/pricing/ (You will need an API key that includes Maps and Routes. You do not need Places.)
Bing Maps: https://www.microsoft.com/en-us/maps/licensing/options