;Leading firms have to execute research and development to keep the leadership and capabilities dynamics, and ecosystem strategy is another key factor to secure market development to be successful. Currently, vendors gradually have the ecosystem management concept: protect leadership and future profits. The background of the case is the leading firm entering the complementary graphics processor market and competing with the existing leader in the market. Lots of literature are related to network effects, complementary products, complementary capabilities, and market entry of ecosystems and platforms; however, there is less literature on entering the complementary market through the ecosystem management method. This research constructs complementary market entry methods and concludes the three key factors: platform ecosystem overlapping, ecosystem management, and market entry. This study for these factors can come to conclusions: The leading firm leverage the advantages of complementary market and ecosystem management methods to influence ecosystem firms to invest in their hardware platforms. Ecosystem firm and product volume will ramp up network effect of the platform, meanwhile establishing a new ecosystem.
