# App Hosting Basics

This skill enables the agent to deploy and manage modern, full-stack web applications (Next.js, Angular, etc.) using Firebase App Hosting.

**Important**: In order to use App Hosting, your Firebase project must be on the Blaze pricing plan.

## Hosting vs App Hosting

**Choose Firebase Hosting if:**
- You are deploying a static site (HTML/CSS/JS).
- You are deploying a simple SPA (React, Vue, etc. without SSR).
- You want full control over the build and deploy process via CLI.

**Choose Firebase App Hosting if:**
- You are using a supported full-stack framework like Next.js or Angular.
- You need Server-Side Rendering (SSR) or ISR.
- You want an automated "git push to deploy" workflow with zero configuration.

## Deploying to App Hosting

### Deploy from Source

This is the recommended flow for most users.

1. Configure `firebase.json` with an `apphosting` block:
    ```json
    {
      "apphosting": {
        "backendId": "my-app-id",
        "rootDir": "/",
        "ignore": [
          "node_modules",
          ".git",
          "firebase-debug.log",
          "functions"
        ]
      }
    }
    ```
2. Create or edit `apphosting.yaml` for configuration.
3. If the app needs safe access to sensitive keys, use `npx -y firebase-tools@latest apphosting:secrets` commands.
4. Run `npx -y firebase-tools@latest deploy` when you are ready to deploy.

### Automated deployment via GitHub (CI/CD)

Set up a backend connected to a GitHub repository for automated "git push" deployments. This is recommended for advanced users and enables continuous deployment on every merge.

## Emulation

To test your app locally using the Firebase Local Emulator Suite, run the emulators with your framework's dev server. Check the Firebase documentation for framework-specific emulation setup.

---

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