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See the following -

The Difference Between Open Source Development and Deployment

For many years, I was a Smalltalk programmer, and that experience gives me a different viewpoint from which to observe ideas in the programming world. For example, the idea that source code should be stored in text files took some getting used to. We as programmers often make a distinction between "development" and "deployment," specifically the idea that we develop software in one place using tools that are different from the place and tools that we use after we deploy the software. In the Smalltalk world, there is no such difference...