One use case of Fornjot is to embed CAD models into websites. Eventually, this could lead to full browser-based CAD modeling functionality. But this milestone is just about laying the groundwork, and to add support displaying CAD models on a website.

Besides viewing the CAD model (which includes rotating, moving, and zooming it), it should be possible to change the model parameters and update the model, without that requiring any support from a backend. This implies that both the CAD models and the CAD kernel fully run in the browser.