Baptista, Cristina SalesMota, JoãoSantos, José Novais2022-06-222022-06-222022Baptista, Cristina Sales; João Mota and José Novais Santos. (2022).” Buyer–supplier interactions in business services: variety in relational interfaces”. Service Business, Volume 16: pp. 621–643.http://hdl.handle.net/10400.5/24621Business services have become a considerable share of many firms’ external resources. Several service typologies have been proposed. This study explores the underlying dynamic of interaction patterns in business services through the lens of relational interfaces. Five exploratory case studies show the presence of variety in the buyer–supplier interfaces. Thus, the relevance of the interaction patterns to increasing a firm’s productivity or innovativeness may require an assessment of this variety in relational interfacesengBusiness ServicesPatterns of InteractionRelational InterfacesCustomizationInnovationjournal articledoi.org/10.1007/s11628-022-00494-9