The focus of this research is to discuss the strategy typology and the role of marketing's influence in the E-Commerce. In order to understand the impact of conglomerate typology and strategy to performance. The study will focus on three major on-line industries-on-line bookstores, travel web-sites, and on-line retail-and take an empirical analysis with the method of questionnaire. Results from the survey are follows: On-line stores get resources by conglomerate operation and strategic alliance, Combining the differentiation strategy and competitor orientation to take competitive advantages. Marketing's influence plays a mediating role, which enables conglomerate typology and strategy to influence business performance.