- Next.js frontend/backend, edgedb on top of postgresql, Linode server behind cloudflare. No Kubernetes.

Or, if you want to be more classical:

- kotlin backend using dropwizard, jdbi ORM connecting to postgresql. No kubernetes.

Or, if you want "plug and play" as backend:

- next.js, supported by postgREST. No kubernetes.

Or, if you want something exotic:

- elixir/erlang/phoenix as frontend and backend, no kubernetes.

I think the future is probably

- some frontend, edgedb, no kubernetes