The Complete Guide to Next.js 15 App Router
Everything you need to know about building modern web applications with Next.js 15's App Router and React Server Components.
Next.js 15 introduces significant improvements to the App Router, making it more powerful and intuitive than ever. This guide covers everything from basic routing to advanced patterns.
File-Based Routing
The App Router uses a file-system based routing paradigm. Pages, layouts, loading states, and error boundaries are all defined by file conventions.
Server Components by Default
React Server Components are now the default, enabling zero-bundle-size components that can access databases and file systems directly.
Streaming & Suspense
Next.js 15 fully embraces React Suspense for streaming. You can progressively render pages, showing content as it becomes available.
David Park
VP of Product at Agency. Product strategist and Next.js enthusiast.
