@sasajuric - I listened to both thanks. One thing that occurred to me is in your discussion of architecture and boundary and maintaining large code bases - I think a chapter (with a mini example) on these subjects in association with Phoenix app - with elixir apps - using boundary would be cool to learn about maintainable elixir architecture too. (Or a blog series - if you find that better). Anyway, I’m curious to learn and try your design ideas