Test and deploy a Lux app

---
title: Test and deploy a Lux app
description: A Lux app moves from your local machine to a ServiceNow instance through preview, testing, debugging, validation, and deployment.
locale: en-US
canonical_url: https://www.servicenow.com/docs/r/application-development/test-and-deploy.html
release: brazil
topic_type: concept
last_updated: "2026-09-30"
reading_time_minutes: 1
keywords: [Test and deploy]
breadcrumb: [Lux Development, Building pro-code applications, Developing your application, Classic app development, Building applications]
---

# Test and deploy a Lux app

A Lux app moves from your local machine to a ServiceNow instance through preview, testing, debugging, validation, and deployment.

Topics in this section start with the ways to preview an experience and with testing an app locally with Vitest. They then cover debugging a running page with Lux DevTools and diagnosing slow pages. They close with the validation checks that run between a local build and a deployed instance, and with the deployment pipeline.