Demystifying React Server Components in Next.js

The Next.js App Router fundamentally changed how we build React applications by making components render on the server by default.

• Server Components allow you to keep heavy dependencies completely out of the client bundle, drastically reducing the amount of JavaScript sent to the browser.
• They enable direct backend access. You can securely query your database or read the file system directly inside your UI components without needing an intermediate API layer.
• You only opt into client-side interactivity using the "use client" directive at the very leaves of your component tree, ensuring optimal performance for static content.