隨著智慧型手機日漸普及,多功能及多樣化服務的產品特色,改變了原先以電信營運商為中心的運作模式,而作業系統開發商便是主導這營運模式改變的主要推手。各家作業系統廠商希望以手機作業系統的規格和特色來發展應用產品及服務,並藉由廣泛的與其他業者合作,來擴大作業系統的使用。為全面的描述此一跨產業合作的複雜互動關係,本研究以個案研究的方法,透過商業生態系統的觀點對於Apple與NOKIA這兩個樞紐者進行分析。主要探討個案公司在核心技術的發展以及如何建立與其他業者的連結關係。研究結果發現樞紐者藉由核心技術與連結關係的運用,經營發展商業生態系統。生態系的健全度不只對利基者有影響,也是樞紐者維持影響力的關鍵。Apple 與NOKIA 依各自的核心能力以及發展目標,執行樞紐策略對商業生態系統的貢獻各有不同。樞紐者在發展影響力時,要考慮是否能夠以互惠的方式與利基者合作,在發展穩定且互利互惠的情況下,生態系成員得以長期留在其中並貢獻價值。Growing smartphone market has changed Telecomunicaiton industry, and Operating System (OS) owners is the leader in techonolgy and business model innovation. By extensively collaborated with partners, the OS can be utilized in various hardware and software products. To illustrate this complex interactoins cross industries, the research uses Business Ecosystem to analysis Keystone company in developing OS and business model.The result found that the core technology and keystone strategy are major impact in driving ecosystem growth. The collective health of ecosystem affacts the development of niche players, and the power of influence to keystone company. The case company, Apple and Nokia, develop belonged ecosystem and their contribution to ecosystem is different. Keystone company should grow a mutually beneficial technology and business model when trying to enlarge their influence. A stable and flourishing ecosystem can retain niche players to create value and keystone company can keep their competitive advantage within.