ProGet is a Package management system and can be used to distribute packages. Packages are easily distributed "buckets" that contain installers and install logic for applications and other components.
At the University of Iowa, ProGet is a DevOps related service primarily targeted to IT admins and developers. It's purpose is to help with distribution of packages, (Chocolatey, Nuget, PowerShell, Ruby Gems, Docker, and others), which can then be deployed by configuration management systems. Access is limited to on-campus or vpn connected systems.