Industrial XP -> Collective Ownership

Collective Ownership

Anyone can change anything at anytime -- Kent Beck

One of the biggest threats to a team's success is politics. Politics at the technical level happen when turf is clearly established. Recognized as an anti-pattern in the book, 揝oftware for your Head? turf is dangerous as it can send teams spiraling toward disaster while engaged in turf-wars.

Collective Ownership elliminates turf. Everyone on the team owns all of the system. Whoever is best equipped to work on any part of the system is empowered to act. This means that the team shares code collectively. If a defect needs fixing, the first person who knows how to fix it and wants to do so goes ahead. There is no attempt to find someone responsible for the defect.

To aid this practice, teams follow Continuous Integration, Pairing, Story Test-Driven Development and Coding Standard. As programmers work in pairs, at any point, two people will know about a part of the system. Frequently rotating pairs helps diffuse knowledge across the team. After a point, it would be impossible to associate one programmer with any portion of the system, as everyone on the team has worked on it at some point.

Continuous Integration requires team guidelines to be setup that will enable different pairs to integrate their work quickly, giving them confidence to believe in Collective Ownership of code. A Coding Standard should exist so people can easily read all of the code.

Story Test-Driven Development is critical to Collective Ownership ?it helps identify defects introduced into a working system due to new modifications. The instant feedback from automated tests provides courage to developers to modify unfamiliar parts of the system.

The design of a system is improved when there are many collaborating minds. Defects and poor designs are easier to acknowledge and correct when blame is shared across the team and not by any individual. Good suggestions are easier to accept when the credit goes to the project community.

Further Reading

Collective Code Ownership, on

Industrial XP logo
Values & Practices
?/b> Continuous Risk Management
?/b> Project Chartering
?/b> Project Community
?/b> Test-Driven Management
?/b> Sustainable Pace
?/b> Planning Game
?/b> Storytelling
?/b> Storytesting
?/b> Frequent Releases
?/b> Small Teams
?/b> Sitting Together
?/b> Continuous Learning
?/b> Iterative Usability
?/b> Evolutionary Design
?/b> Refactoring
?/b> Domain-Driven Design
?/b> Pairing
?/b> Continuous Integration
?/b> Collective Ownership
?/b> Coding Standard
?/b> Retrospectives

Send mail to with questions or comments about this web site.
Copyright ?2004 Industrial Logic, Inc. All Rights Reserved.
万丰彩票 临海市 湖北省 钟祥市 大同市 兰溪市 湘潭市 松滋市 铁力市 彭州市 厦门市 宜春市 邹城市 彭州市 山东省 金昌市 平度市 海南省 双滦区 忻州市 葫芦岛市 十堰市 平度市 潞城市 临沂市 阜新市 普兰店市 汉川市 兴城市 都匀市 枣庄市 安达市 烟台市 高邮市 梅河口市 江油市 白银市 丰城市 孝义市 石首市 池州市 葫芦岛市 福建省 金华市 梅河口市 胶州市 上虞市 大石桥市 江阴市 吉首市 大庆市 铁力市 深州市 山西省 厦门市 项城市 永州市 原平市 明光市 耒阳市