Stephane, generally speaking EA is a strategic tool that is applied for large-scale scope of engineering to resolve the mess with hierarchical tree-structured aims, available processes and information assets. You can however apply it for start-up modeling of business, information and technical aspects but they wont reduce complexity but create it, I am afraid.

I think in the citation you provided, the named architecture is a representation of some IS

You can contact directly the well-known scholars in the area: Marc Langhorst, Erik Proper via researchgate, I would be much interested in their POV as well

Hi Stephane, I have experience about the Japanese approach of Business Philosophies like TPS (Lean), TQM and TPM and maybe this applies to Agility too. For all of those behaviour change initiatives the baseline is the same starting with Productivity holistic approach and then with the KAIZEN strategy. You can check on Asian Productivity Centres and Japan Productivity Centers. I hope this could be helpful to you. Regards

You might want to look at these projects from colleagues at TU Munich: https://wwwmatthes.in.tum.de/pages/194x6d2qxjley/Completed-EAM-projects

The EAM pattern catalogue is applicable in SMEs and startups as well.

Thank you, interesting resources!

Last year, we published a paper called "Bimodal Enterprise Architecture Management: The Emergence of a New EAM Function for a BizDevOps-Based Fast IT" at the TEAR workshop (https://ieeexplore.ieee.org/document/8089832/). The case for this paper was an eCommerce unit with agile practices in a retail company and not a startup - nevertheless, it might serve as an inspiration for your work.

We are trying to answer this question in our research. See: https://wwwmatthes.in.tum.de/pages/mdl9jm5nwbk2/Scaled-Agile-Organizations and https://www.researchgate.net/project/The-Role-of-Enterprise-Architecture-Management-in-Scaled-Agile-IT-Organizations.