[sambroner]

When I was working on the Fluid Framework, now basically Microsoft's Copilot Pages, we built a URI Schema to let in-app widgets specify the code that would let users interact with the underlying data.

Example: you open the app and load a specific document. Simplified, but this loads a "boot loader" and connects to the data feed of the document. The boot loader reads the first few operations which contains the widget/app code to load all the UX of the application. Examples of widgets would be a whiteboard, a text editor, a table widget, an identity card, a latex widget, etc.

Widgets could be posted outside of the document because any loader that could read the URI could parse it and understand the app code to load and data feed to connect to.

I'm still somewhat infatuated with the design and I'd like to see it much more widely adopted. Security issues were, of course, a major issue.