The agent builds real-time behavioral profiles from clickstream data: pages viewed, products examined, time spent, cart activity, price sensitivity, and category affinity. For returning customers, purchase history and reviews layer on top.
Hybrid recommendations: collaborative filtering (similar customers bought these), content-based (similar along style, price, brand dimensions), and contextual signals (time, device, referral). Different weights for different placements: discovery on homepage, complementary on PDP, completion at checkout.
Recommendations update within the session. A visitor shifting from running shoes to hiking boots sees recommendations adapt immediately. Email uses the most recent profile, not stale purchase data.