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 Chances are you've heard of **[GitHub](https://en.wikipedia.org/wiki/GitHub)**, the global online software engineering platform. \
 Think of Git<sup>AEC</sup> as GitHub, but for the world of Architecture, Engineering, and Construction. 
 
+Watch the presentation : **[Making IFC versioning accessible for everyone](https://www.youtube.com/watch?v=vqkKc3TCWdg)** on YouTube.
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 ## A Common Data Environment
 
 Git<sup>AEC</sup> is a **[git](https://en.wikipedia.org/wiki/Git)**-based **[Common Data Environment](CDE)** (CDE) developed on top of **[Forgejo](https://forgejo.org)** with  :