The strategy of understanding issues before they become apparent and presenting the solution as a benefit to the customer, etc.

Retailer vs Wholesaler vs Distributor vs Reseller – What’s the Difference?
Starting a new eCommerce business can feel like learning a new language. You’ll quickly encounter terms like retailer, wholesaler, distributor, and reseller. What do they all mean, and how do they differ? In simple terms, these labels describe different roles in the supply chain that gets products from the maker