Which type of custom event should be implemented to accurately track the completion of a multi-step form on a website?

To accurately track the completion of a multi-step form on a website, a custom event should be implemented that fires only when the final step of the form is successfully submitted. This event should be distinct from events triggered at each individual step. The goal is to capture only those users who have fully completed the process. For example, you could name the custom event 'FormComplete' and trigger it only when the user clicks the final 'Submit' button and the form data is successfully processed by the server. This avoids counting users who started the form but didn't finish it, providing a more accurate measure of form completion rates and conversion performance. You could also implement step-specific custom events to track drop-off rates at each stage of the form, but the 'FormComplete' event is crucial for measuring overall completion success.