AbstractSupplier selection (VS) is a decision-making problem involving strategic management. The criteria and importance weights of VS must be carefully selected to meet supply chain competitive strategies. Most existing VS models use the perspectives of buying firms to formulate VS criteria. This study investigates 108 valid respondents, comprising 52 and 56 functional staff from buyer and supplier firms, respectively, regarding the importance weights of VS criteria under four operations strategies. The variance weighting method is employed to calculate and categorize the individual importance weights. This study derives exploratory explanations then by conducting in-depth interviews with 12 functional managers focused on two-side divergent views of VS criteria. This study discusses derived applications of Herzberg's two-factor theory and the supplier integration approach to mitigate the influences of the widely used explicit operational criteria in the existing VS model.