1. A customer clicks on a tracking URL that contains a sub ID. The sub ID is a unique identifier that is added to the tracking URL, which can be used to track specific customer behavior. (https://www.partner.com/?tclid=fd2Jkla3)

2. The tracking URL redirects the customer to the desired landing page. During this process, the sub ID (fd2Jkla3) is recorded and stored on the server.

3. The customer performs an action on the landing page, such as making a purchase or filling out a form. The server-side tracking technology records this behavior and attributes it to the specific sub ID.

4. The server then sends the conversion data, including the sub ID, to the trusted conversion tracking endpoint

By implementing server-side conversion tracking with sub ID, businesses can accurately track customer behavior from click to conversion. This approach also eliminates the need to rely on cookies, which can be deleted or blocked by customers, resulting in incomplete data. Ultimately, server-side conversion tracking with sub ID can help businesses make data-driven decisions, optimize their advertising spend, and improve their overall conversion rates.