Google Tag Manager.

With Google Tag Manager, you can create lots of integrations without having to change any code directly in your online shop.

This could be, e.g., integrating analytics/statistics, affiliate partner systems etc.

You can learn more about Google Tag Manager on Google's page for it: https://marketingplatform.google.com/about/tag-manager/ (opens in a new tab)

You connect Google Tag Manager to your shop via Other integrations:

Click the add new button at the bottom.

You can click the Google Tag Manager button to get a standard code for the integration. You can use it as it is, or adapt it from there as needed.

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You need to enter the Public ID of the Google Tag Manager container you want to use.

Click Save at the bottom, and the integration has been created.