We are using marimo in production at Owkin (AI biotech), to build data visualization apps.
To me it is really the fastest tool to build simple apps, 1 order of magnitude faster than concurrents like streamlit. We do simple prototypes, and then iteratively grow them into production grade apps.
Secondly, the intuitive notebook-based approach + the interop with rich python ecosystem, enables our data scientists, computational biologists, and more, to contribute to app building.
Last, since it is all defined as code (git friendly), we can easily manage contributions from all stakeholders: data preparation code, plots, components, apps.
It's awesome !