You can add a Procfile to the root of your project directory.

It allows to customize the command that will be used to start your app.


web: node index.js

Procfiles can contain additional process types. For example, you might declare one for a background worker process that processes items off of a queue.

Cloudflare CDN

You can choose to enable the Cloudflare option so your app traffic goes through their network.

It provides a faster delivery and caching of your static assets and Denial-of-Service attack protection.

Due to the aggresive caching, your static file might not reflect changes right after you deploy a new version. You can disable this option while developing to make sure you can see your changes.