本研究計畫希望從專案層級的觀點來看,企業在策略聯盟中,是與多個聯盟夥伴合作還是與單一聯盟夥伴合作之績效會比較佳。透過研究美國製藥產業的1,029個聯盟樣本,研究結果顯示,同時進行策略聯盟績效會比循序漸進的聯盟績效較差,除非廠商夠大。 This paper extends prior alliance studies from an alliance project level to a firm level, and tests the influence of simultaneous alliances and sequential alliances on firm performance using data from 1,029 alliances in the global pharmaceutical industry. Our research suggests that simultaneously conducting multiple alliances may not generate better performance except for the firms with large size or for conducting inter-industry alliances. This paper contributes to the existing theory by examining the joint effect of simultaneous alliances and characteristics of alliances on a firm’s performance.