The throughput category (activities), addresses the criteria directly related to the specific
relationship and the direct contact between the buyer and supplier. The activities and
processes in this category are linked to either the buyer or the supplier but may also be
linked to the reciprocal interface. The output category (results), relates to the outcome of
the relationship, which are the effects of the relationship from both the buyer’s and
supplier’s perspective, such as mutual incentives and decreased total costs.