The online meal delivery business in Thailand has grown substantially. Online platforms, customers, and riders are the three main stakeholders this service system. While platform aims to minimize total operation cost, customers would like receive a high-quality meal. Moreover, who responsible for pickup of customer’s house focus on maintaining their income. To address issue, research develops v...

abstract: in most industries the cost of raw materials and component parts constitutes almost 60% percent of cost of a product (in some industries up to 80%). in this situation, proper sourcing can play a key role in an organization's efficiency and effectiveness, because it has a direct effect on cost reduction, profitability and flexibility of a company. in this paper, determining the op...