PowerServer for almost all types including .NET, JBoss, JEUS, WebLogic and WebSphere can be installed in a silent mode. And the PowerServer silent installer not just install PowerServer, but also install the packaged PowerServer applications.
If PowerServer 2020 has already been installed, silent installer will upgrade it to the current version; if the exact same build and version of PowerServer has already been installed, then silent installer will remove the PowerServer first and then install it again; if the same version (but a different build) of PowerServer has already been installed, then silent installer will terminate the installation.