Development policy

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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.


All Wikimedia engineering endeavors are guided by the Architecture principles.

Creation of new services that external to MediaWiki, should follow the Services guideline.

Runtime support

Changes to PHP support in MediaWiki core or components bundled with official MediaWiki releases, must follow the Support policy for PHP .

Code review

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

Implementation policies