---
title: Critical changes to analytics and marketing measurement in Apps - Shopify developer changelog
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
source_url:
  html: https://shopify.dev/changelog/critical-changes-to-analytics-and-marketing-measurement-in-apps
  md: https://shopify.dev/changelog/critical-changes-to-analytics-and-marketing-measurement-in-apps.md
---

[Back to Developer changelog](https://shopify.dev/changelog)

September 8, 2022

Tags:

* Action Required
* API

# Critical changes to analytics and marketing measurement in Apps

Starting October 3rd, Plus Merchants who customize their checkout via Checkout Extensibility will be required to use the new Web Pixel Extension instead of adding checkout.liquid code.

Ensure your app can support these merchants' measurement goals by building with the Web Pixel Extension. This will unlock additional locations for adding pixels, such as checkout, while increasing data accuracy, and providing tools for privacy compliance.

Visit the [developer documentation to learn more](https://shopify.dev/apps/pixels/pixel-extension?utm_campaign=Pixels\&utm_medium=changelog#app-web-pixels) and build with pixels.