A previous question asks "How many Deep Space stations are there?". What exactly is a Deep Space station?
That is, what is it that distinguishes a station with the (Federation) designation, qualifier, or label of Deep Space from any other space station maintained by or staffed by Federation or allied personnel?
Is it based on distance from Earth (e.g. any station more than X light years from Earth is per se a Deep Space station, by definition)?
Are Deep Space stations covered under a different regulatory regime (e.g. martial law versus civilian law), funding structure, or polity than regular Starbases or other non-Deep Space stations and the name reflects this different structure?