Building Scalable Web Apps with Next.js 14

## Introduction

Next.js 14 introduces powerful new features that change how we build web applications. In this post, we'll explore the latest advancements including Server Actions, Partial Prerendering, and improved development performance.

### Server Actions

Server Actions allow you to mutate data directly from your React components without having to manually create an API route. This simplifies form handling and data mutations significantly.

```javascript

export default function Form() {

async function createInvoice(formData) {

'use server'

// mutate data

}

return <form action={createInvoice}>...</form>

}