Summary  
Demonstrates how to scaffold a Nest.js project using CLI commands and launch it in both standard and development modes with automatic restarts.  

General domain of usage  
Server-side web services and backend APIs


To start working with Nest.js, you need to create a new project. You can do this using the Nest CLI without installing it globally.

Run the following command:

```bash 
npx @nestjs/cli new my-app
```

This will create a new Nest.js application with all required files and dependencies.

You will be asked to choose a package manager. Select the one you prefer and wait for the setup to complete.

Once the project is created, move into the project folder:

```bash 
cd my-app
```

Now start the application:

```bash 
npm run start
```

For development, use:

```bash 
npm run start:dev
```

This command **automatically restarts the server** when you change files.

By default, the server runs on:

```bash 
http://localhost:3000
```

Open this address in your browser, and you will see a simple response from the server.

At this point, you already have a running Nest.js application.


Which command runs the Nest.js app with automatic restart during development?

Learn how to build structured backend applications with Nest.js. Organize your code using controllers, services, and modules, handle requests and data validation, and create a complete API using a scalable architecture.

Creating and Running Your First Nest.js App