Explosion?

It’s not like I’m deciding on customer’s IT policy

I’m doing cloud migration now and one of assumptions is that two regions in Americas is enough for resilience. I’m in danger

Nope, JS is “You think you are nerd”.

Also, why React is there? It’s a lib not a language

I’m still not totally understanding what you’re looking for. But if you need alternative to JS for writing web UIs check out htmx. It’s still JS lib but its main goal to facilitate hyper text as engine. Meaning you do SSR but with CSR UX. And it’s backend agnostic.