Customer Loyalty Analytics (see Customer Loyalty Analytics (Brand Analytics Dashboard)) buckets a brand's customers into four segments by recency, frequency, and spend:
Amazon's Customer Loyalty Analytics labels the Top Tier / Promising segments internally as 'high spend customers' and 'promising customers' — and Amazon-native promotions/coupons can be targeted directly at these labels.
Apply: Direct brand-tailored promotions at Top Tier and Promising segments, especially when the segment forecast view shows Top Tier declining — these are already-warm customers, so the promotion buys back repeat sales at a much better effective ACOS than acquiring an equivalent new customer.