The Product Affinity module pulls data from your commerce store(s) and reports on products that are frequently purchased together.
Where can I find which products are most often purchased together?
This can be found in the Product Affinity - Frequently Purchased Together (Top 50 Combos) chart.
Where can I find which products are most often purchased after other products?
This can be found in the First to Second Order Affinity (Top 50 Combos) chart.