Comment by _xnmw

You don't even need an SPA. Having the backend + frontend share the same state makes development so much faster and easier it's shockingly refreshing. When building a SaaS project last year I decided to just ditch React/Angular/Vue and did everything server-side like it was 2005. I was extremely pleased at the result -- everything feels snappy, secure, and native for the browser. I was shocked at how much time and headache I saved: not having to design/deploy an API and all the trimmings (ACLs, CORS, JWTs etc.), not having to spend X hours a day wrestling with Webpack/hot reloading/npm/tree-shaking/state management, having direct access to backend secrets/state/APIs and just spitting out HTML, it's just so....lovely. It simplifies performance tuning as well, the only thing I need to optimize is the server, which is easy to do because I have 100% control and visibility, compared to debugging/optimizing JavaScript for a million different clients.