Development policy

The development policy defines how Wikimedia software is developed and maintained. This includes MediaWiki core, the bundled skins and extensions, as well as other skins and extensions that are deployed on Wikimedia Foundation wikis.

Architecture Principles
All Wikimedia engineering endeavors are guided by the Architecture Principles.

Deprecation policy
Changes to MediaWiki core that deprecate or remove aspects of the public PHP interface, must follow the Deprecation policy.

Code review
Privileged Gerrit users must follow the Gerrit privilege policy when exercising their +2 rights.