A decentralized communications model where peers are "mapped". In a buyer-supplier relationship each have "peer roles" for joint accountability and problem solving. For example, a commercial manager for the buyer would have a commercial manager she would work directly with at the supplier. Roles are clearly delineated and do not overlap in order to avoid duplication of effort and/or micromanagement from the supplier. The buyer and supplier work to support each other where they "win together" and "lose together". The concept greatly improves collaboration between a buyer and supplier. Also sometimes referred to as "2 in a Box" and “Reverse Bow Tie”.