Well, there's more to it...the use of 'namespace' gives you the means to set up your own library, or yet, avoids the problem of 'naming convention' conflicts between different pieces of code when including a third-party library or any standardized libraries available (i.e., publicized/standardized reusable code). And it can be inside or outside the IDE of a dedicated host computer, depending on the intent of the application(s) program (e.g., multiple API integration via network with different hosted frameworks).

Just my 2 cents.

Onassis