The VT Writer server can be installed on-premise behind your firewall in these ways:

1. VMWare ESX - We supply a prebuilt OVA running the Ubuntu operating system with all VisibleThread services preconfigured. This can be deployed on any VMWare ESX type infrastructure
2. Red Hat Deployment - We support installation via RPM to an existing Red Hat server you have spun up. This Red Hat server can be running on any infrastructure you currently support (VMware ESX, Microsoft Hyper-V, Microsoft Azure, AWS / GovCloud)
3. AWS Linux Deployment - We support installation via RPM to AWS Linux 2.
4. Microsoft Windows Deployment - We support installation via .exe on Windows Server 2016 - 2022.

For more details of installation requirements please see the attached VT Writer On-Prem Deployment Overview  document.

For a detailed setup guide please see the article here:

VT Writer 4.0.2 Configuration Guide