---
title: Event tracking with Headless (SSR)
slug: p3qc0096
canonical_url: https://docs.coveo.com/en/p3qc0096/
collection: coveo-for-commerce
source_format: adoc
---
# Event tracking with Headless (SSR)

It's crucial that you track [touchpoints](https://docs.coveo.com/en/o6ha0421/) to analyze [storefront](https://docs.coveo.com/en/p33g0410/) performance, create reports, and power [Coveo Machine Learning (Coveo ML)](https://docs.coveo.com/en/188/) [models](https://docs.coveo.com/en/1012/).
You can do this by sending events to the [Coveo Analytics](https://docs.coveo.com/en/182/) service.

If you use [Coveo Headless](https://docs.coveo.com/en/lcdf0493/) to build your [product discovery solutions](https://docs.coveo.com/en/o9cf0524/), track events using dedicated Headless controllers.
These controllers automatically log specific commerce events, such as when a user makes a purchase or adds a product to a cart.

Headless commerce controllers rely on the [Event Protocol](https://docs.coveo.com/en/o9je0592/) to log events.

The following table shows the types of events to track and the corresponding controllers.

[%header,cols="2*"]
|===
|Event
|Tracking controller

|[Click](https://docs.coveo.com/en/o1n92447/)
|[Use the `InteractiveProduct` controller to track clicks in product lists](https://docs.coveo.com/en/oc685393#displaying-lists-of-products)

|[Product view](https://docs.coveo.com/en/o1n93101/)
|[Use the `ProductView` controller to log view events when a user navigates to a PDP](https://docs.coveo.com/en/oc685393#displaying-a-product-on-a-product-detail-page)

|[Cart](https://docs.coveo.com/en/o1n93466/)
|[Use the `Cart` controller to update cart state when products are added or removed](https://docs.coveo.com/en/oc685394/)

|[Purchase](https://docs.coveo.com/en/o1n93059/)
|[Use the `Cart` controller to submit a purchase after a transaction is completed](https://docs.coveo.com/en/oc685394/)
|===