Next.js App Router · 2026

Layout Bench

Four answers. The folder layout the architecture notes would actually pick.

How big is it? PrototypeOne person, shape still moving ProductPeople depend on it

How many apps? One appA single Next.js deploy Several appsWeb, admin, or a second product

What data does it touch? Static pagesContent, no database Server readsQueries, no accounts yet Accounts and writesAuth, mutations, a real schema

How many shells? One layoutSame chrome everywhere Marketing and appTwo layouts, different jobs

Loading the recommendation…

Tree

Private folders start with _. Route groups use (parentheses) and stay out of the URL. App Router is the default. The Pages Router is maintenance-only.

Tree

Server Component