Since the implementation of the General Data Protection Regulation (GDPR) in Europe, eCommerce platforms have had to adapt their data collection methods dramatically. The regulations require that businesses collect consent from users before tracking their data, directly impacting tools like Google Analytics. If users opt-out, the tracking becomes ineffective, which can lead to drastic inaccuracies in session data. Some merchants reported drops of as much as 93% in one day! You can read more about one such case in
this discussion.