# How to Monitor and Fix Critical User Experiences

> In this hands-on workshop, we'll walk through how to use Sentry for Critical Experience Monitoring in a Next.js ecommerce app.

**URL:** https://sentry.io/resources/monitor-critical-experiences/

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**Type:** Event | **Date:** ON-DEMAND

**Tags:** Tracing

Most applications have select user journeys that matter. When those flows break or slow down, you feel it immediately in conversion, trust, and support load.

In this hands-on workshop, we'll walk through how to use Sentry for **Critical Experience Monitoring** in a Next.js ecommerce app. The focus is not "monitor everything", but **monitor what actually matters** to users and the business.

We'll cover:

- Setting up Sentry in a Next.js application
- Instrumenting critical user journeys: product browsing, add to cart, checkout
- Tracking errors and performance at each step of the funnel
- Building a Critical Experience Dashboard to spot regressions fast and prioritize fixes

By the end, you'll have a clear, repeatable approach to monitoring user experiences the way users experience them, end to end, in production, under real traffic.

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*Source: [sentry.io/resources/monitor-critical-experiences/](https://sentry.io/resources/monitor-critical-experiences/)*