We can measure it through KPIs such as: - The bounce rate: which measures the bounce rate of users. The Bounce Rate is a negative KPI so the goal is to reduce the Bounce rate; - The number of pages per session (Pages / Session): which measures the number of pages viewed on average by users for each browsing session. This KPI can be used to measure engagement. - The Conversion Rate, which measures the purchase conversion rate, that is the number of transactions over the number of sessions; - The Average Order Value, which measures how much the channel's customers spend on average, this KPI can be influenced both by ongoing promotional activities and by cross-selling and up-selling activities.