Version Control



We keep all our project artifacts in a single, authoritative place.

To work as a team, you need some way to coordinate your source code, tests, and other important project artifacts. A version control system provides a central repository that helps coordinate changes to files and also provides a history of changes.

A project without version control may have snippets of code scattered among developer machines, networked drives, and even removable media. The build process may involve one or more people scrambling to find the latest versions of several files, trying to put them in the right places, and only succeeding through the application of copious caffeine, pizza, and stress.

A project with version control uses the version control system to mediate changes. It’s an orderly process in which developers get the latest code from the server, do their work, run all the tests to confirm their code works, then check in their changes. This process, called continuous integration, occurs several times a day for each pair.


If you aren’t familiar with the basics of version control, start learning now. Learning to use a version control system effectively may take a few days, but the benefits are so great that it is well worth the effort.

Get The Art of Agile Development now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.