MediaWiki, the software platform and interfaces that allow Wikipedia to function, needs ongoing support for the next decade in order to provide creation, moderation, storage, discovery, and consumption of open, multilingual content at scale. In this session we’ll take a look behind the scenes of what it takes to ensure MediaWiki serves us well as the software platform that needs to scale for billions of page views per month and empower a large, collaborative user base of editors and technical contributors. We will cover strategy, progress, open questions and challenges on the way to a sustainable future.