THIS IS WHY BUSINESS IGNORES APPLE.
A server is not an "app". Try bolting something on to your Caravan to make it into a Ferrari.
Well, actually, every Mac is a nearly full-functioning server. This isn't a self-contained app as it seems to be. It piggybacks on the many server technologies built into every Mac. It pretty much is like your average Linux server. They too have easily accessible server tools in the client version. The difference is the GUI for interacting with these features.