Web session events are captured during different web sessions. A segmentation model is generated based on a number of occurrences of the web session events for different time stamp periods. The segmentation model plots a segmentation graph that may identify differences between the web session events with respect to time factors. The segmentation model may use the whole dataset of event occurrences as an input without any preliminary data segmentation or discrimination. The model can associate the web session events with the different geographic locations, reveal possible reasons for customer experience difference for the users from different locations and provide statistically sound explanation of this difference. The model is scalable and may work with big data acquired by web-based commerce sites with wide international customer base.