Choose a runtime
Static sites are served directly. For apps, choose Node, Python, or Ruby and set a version, a build command, and a start command. PHP is served by our web tier with no container to manage.
Use the Runtime tab to start, stop, restart, and rebuild your app, and to set environment variables your app reads at runtime.
Deploy and roll back
Every deploy is versioned. Upload a new version from the Deployments tab, and restore any previous version with one click if something goes wrong.