Software development is the set of activities that results in software products. Software development may include research, new development, modification, reuse, re-engineering, maintenance, or any other activities that result in software products.^[1] Especially the first phase in the software development process may involve many departments, including marketing, engineering, research and development and generalmanagement.^[2]

The term software development may also refer to computer programming, the process of writing and maintaining the source code.