Just like that, your Mac is a powerful server. The new OS X Server brings even more power to your business, home office or school. It’s remarkably easy to install, set up and manage. And new features make it faster than ever to download software across your network. Add OS X Server to OS X Yosemite from the Mac App Store.
Changes introduced in macOS Server 5.7.1 - Apple Support Dec 18, 2019 Upgrade and migrate data on your macOS Server - Apple Support Oct 07, 2019 Mac OS Server App for Mojave? - Apple Community
Oct 10, 2019
macOS Server 5.10 - Download - Free Mac Downloads macOS Server is a self-explanatory server application specially designed for macOS and iOS devices that enables you to control and manage multiple user accounts and devices from within a The Future of macOS Server | The Mac Security Blog Mar 06, 2018
The death of macOS Server | ZDNet
Quicksilver — Mac OS X at your Fingertips