Conversion dropped by 14% overnight. Find the cause in 20 minutes

This article addresses a common e-commerce challenge: a sudden 14% drop in conversion rates overnight, despite an increase in paid orders. The author examines potential causes, including a recent iOS release and promotional activities on Telegram. The focus is on a rapid diagnostic methodology: how to verify key metrics within 20 minutes, identify tracking system errors, and distinguish real business issues from technical glitches. The article provides a step-by-step guide for analysts and product managers to quickly localize the source of an anomaly and make informed decisions. This material is valuable for professionals working with data analytics and user journey optimization, as it highlights the importance of verifying data integrity before drawing conclusions about declining sales performance.