A business ecosystem's healthiness may be attributed to the superior financial performance of a firm. This paper develops the concept of a business ecosystem's healthiness as an organizational capability and empirically examines the association between healthiness and a firm's financial performance with the moderating effect of IT capability. To do this, a business ecosystem's healthiness is conceptualized by the ecology and business network research stream. Moreover, the relationship between a business ecosystem's healthiness, a flagship firm's performance, and IT capability are examined using the Structured Equation Model. If this study produces expected the results, this paper can be a backgrounder for a business ecosystem's academic guidelines in the perspective of a single company